diff --git a/__fixtures__/unit/helper.js b/__fixtures__/unit/helper.js
index 081bb10e..9f509939 100644
--- a/__fixtures__/unit/helper.js
+++ b/__fixtures__/unit/helper.js
@@ -65,7 +65,8 @@ module.exports = {
             login: 'creator'
           },
           number: (options.number) ? options.number : 1
-        }
+        },
+        comment: options.issueComment
       },
       log: {
         child: (s) => {
diff --git a/__tests__/unit/filters/author.test.js b/__tests__/unit/filters/author.test.js
index a58184d3..63ef561d 100644
--- a/__tests__/unit/filters/author.test.js
+++ b/__tests__/unit/filters/author.test.js
@@ -17,6 +17,16 @@ test('should fail with unexpected author', async () => {
   expect(filter.status).toBe('fail')
 })
 
+test('should fail with unexpected author one_of author', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    one_of: [otherAuthorName]
+  }
+  const filter = await author.processFilter(createMockContext(authorName), settings)
+  expect(filter.status).toBe('fail')
+})
+
 test('should pass with expected author', async () => {
   const author = new Author()
   const settings = {
@@ -29,6 +39,16 @@ test('should pass with expected author', async () => {
   expect(filter.status).toBe('pass')
 })
 
+test('should pass with one_of author', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    one_of: [authorName]
+  }
+  const filter = await author.processFilter(createMockContext(authorName), settings)
+  expect(filter.status).toBe('pass')
+})
+
 test('should fail with excluded author', async () => {
   const author = new Author()
   const settings = {
@@ -41,13 +61,21 @@ test('should fail with excluded author', async () => {
   expect(filter.status).toBe('fail')
 })
 
-test('should pass with excluded author', async () => {
+test('should fail with none_of author', async () => {
   const author = new Author()
   const settings = {
     do: 'author',
-    must_exclude: {
-      regex: otherAuthorName
-    }
+    none_of: [authorName]
+  }
+  const filter = await author.processFilter(createMockContext(authorName), settings)
+  expect(filter.status).toBe('fail')
+})
+
+test('should pass with none_of author', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    none_of: [otherAuthorName]
   }
   const filter = await author.processFilter(createMockContext(authorName), settings)
   expect(filter.status).toBe('pass')
@@ -67,6 +95,20 @@ test('should pass with expected author from correct team', async () => {
   expect(filter.status).toBe('pass')
 })
 
+test('should pass with one_of author from correct team', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    must_include: {
+      regex: authorName
+    },
+    one_of: ['@org/team-slug']
+  }
+  Teams.extractTeamMembers = jest.fn().mockReturnValue([authorName])
+  const filter = await author.processFilter(createMockContext(authorName), settings)
+  expect(filter.status).toBe('pass')
+})
+
 test('should fail with expected author from incorrect team', async () => {
   const author = new Author()
   const settings = {
@@ -81,6 +123,20 @@ test('should fail with expected author from incorrect team', async () => {
   expect(filter.status).toBe('fail')
 })
 
+test('should fail with one_of author from incorrect team', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    must_include: {
+      regex: authorName
+    },
+    one_of: ['@org/team-slug']
+  }
+  Teams.extractTeamMembers = jest.fn().mockReturnValue([])
+  const filter = await author.processFilter(createMockContext(authorName), settings)
+  expect(filter.status).toBe('fail')
+})
+
 test('should fail with unexpected author from correct team', async () => {
   const author = new Author()
   const settings = {
@@ -95,6 +151,20 @@ test('should fail with unexpected author from correct team', async () => {
   expect(filter.status).toBe('fail')
 })
 
+test('should fail with one_of author from correct team', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    must_include: {
+      regex: otherAuthorName
+    },
+    one_of: ['@org/team-slug']
+  }
+  Teams.extractTeamMembers = jest.fn().mockReturnValue([authorName])
+  const filter = await author.processFilter(createMockContext(authorName), settings)
+  expect(filter.status).toBe('fail')
+})
+
 test('should pass when the author is a member of the team', async () => {
   const author = new Author()
   const settings = {
@@ -106,6 +176,17 @@ test('should pass when the author is a member of the team', async () => {
   expect(filter.status).toBe('pass')
 })
 
+test('should pass when the author is one_of the members of the team', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    one_of: ['@org/team-slug']
+  }
+  Teams.extractTeamMembers = jest.fn().mockReturnValue([authorName])
+  const filter = await author.processFilter(createMockContext(authorName), settings)
+  expect(filter.status).toBe('pass')
+})
+
 test('should fail when the author is not a member of the team', async () => {
   const author = new Author()
   const authorName = 'mergeable'
@@ -118,6 +199,60 @@ test('should fail when the author is not a member of the team', async () => {
   expect(filter.status).toBe('fail')
 })
 
+test('should fail when the author is not one_of the members of the team', async () => {
+  const author = new Author()
+  const authorName = 'mergeable'
+  const settings = {
+    do: 'author',
+    one_of: ['@org/team-slug']
+  }
+  Teams.extractTeamMembers = jest.fn().mockReturnValue([otherAuthorName])
+  const filter = await author.processFilter(createMockContext(authorName), settings)
+  expect(filter.status).toBe('fail')
+})
+
+test('should pass when the author is not member of the none_of team', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    none_of: ['@org/team-slug']
+  }
+  Teams.extractTeamMembers = jest.fn().mockReturnValue([otherAuthorName])
+  const filter = await author.processFilter(createMockContext(authorName), settings)
+  expect(filter.status).toBe('pass')
+})
+
+test('should fail when the author is member of the none_of team', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    none_of: ['@org/team-slug']
+  }
+  Teams.extractTeamMembers = jest.fn().mockReturnValue([authorName])
+  const filter = await author.processFilter(createMockContext(authorName), settings)
+  expect(filter.status).toBe('fail')
+})
+
+test('should pass when the author is one_of @author', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    one_of: ['@author']
+  }
+  const filter = await author.processFilter(createMockContext(authorName), settings)
+  expect(filter.status).toBe('pass')
+})
+
+test('should fail when the author is none_of @author', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    none_of: ['@author']
+  }
+  const filter = await author.processFilter(createMockContext(authorName), settings)
+  expect(filter.status).toBe('fail')
+})
+
 const createMockContext = (author) => {
   return Helper.mockContext({ author })
 }
diff --git a/__tests__/unit/validators/author.test.js b/__tests__/unit/validators/author.test.js
index d7da0ae3..206e5554 100644
--- a/__tests__/unit/validators/author.test.js
+++ b/__tests__/unit/validators/author.test.js
@@ -17,6 +17,16 @@ test('should fail with unexpected author', async () => {
   expect(validation.status).toBe('fail')
 })
 
+test('should fail with unexpected one_of author', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    one_of: [otherAuthorName]
+  }
+  const validation = await author.processValidate(createMockContext(authorName), settings)
+  expect(validation.status).toBe('fail')
+})
+
 test('should pass with expected author', async () => {
   const author = new Author()
   const settings = {
@@ -29,6 +39,16 @@ test('should pass with expected author', async () => {
   expect(validation.status).toBe('pass')
 })
 
+test('should pass with one_of author', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    one_of: [authorName]
+  }
+  const validation = await author.processValidate(createMockContext(authorName), settings)
+  expect(validation.status).toBe('pass')
+})
+
 test('should fail with excluded author', async () => {
   const author = new Author()
   const settings = {
@@ -41,6 +61,16 @@ test('should fail with excluded author', async () => {
   expect(validation.status).toBe('fail')
 })
 
+test('should fail with none_of author', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    none_of: [authorName]
+  }
+  const validation = await author.processValidate(createMockContext(authorName), settings)
+  expect(validation.status).toBe('fail')
+})
+
 test('should pass with excluded author', async () => {
   const author = new Author()
   const settings = {
@@ -53,6 +83,16 @@ test('should pass with excluded author', async () => {
   expect(validation.status).toBe('pass')
 })
 
+test('should pass with none_of author', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    none_of: [otherAuthorName]
+  }
+  const validation = await author.processValidate(createMockContext(authorName), settings)
+  expect(validation.status).toBe('pass')
+})
+
 test('should pass with expected author from correct team', async () => {
   const author = new Author()
   const settings = {
@@ -67,6 +107,20 @@ test('should pass with expected author from correct team', async () => {
   expect(validation.status).toBe('pass')
 })
 
+test('should pass with one_of author from correct team', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    must_include: {
+      regex: authorName
+    },
+    one_of: ['@org/team-slug']
+  }
+  Teams.extractTeamMembers = jest.fn().mockReturnValue([authorName])
+  const validation = await author.processValidate(createMockContext(authorName), settings)
+  expect(validation.status).toBe('pass')
+})
+
 test('should fail with expected author from incorrect team', async () => {
   const author = new Author()
   const settings = {
@@ -81,6 +135,20 @@ test('should fail with expected author from incorrect team', async () => {
   expect(validation.status).toBe('fail')
 })
 
+test('should fail with one_of author from incorrect team', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    must_include: {
+      regex: authorName
+    },
+    one_of: ['@org/team-slug']
+  }
+  Teams.extractTeamMembers = jest.fn().mockReturnValue([])
+  const validation = await author.processValidate(createMockContext(authorName), settings)
+  expect(validation.status).toBe('fail')
+})
+
 test('should fail with unexpected author from correct team', async () => {
   const author = new Author()
   const settings = {
@@ -95,6 +163,20 @@ test('should fail with unexpected author from correct team', async () => {
   expect(validation.status).toBe('fail')
 })
 
+test('should fail with one_of author from correct team', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    must_include: {
+      regex: otherAuthorName
+    },
+    one_of: ['@org/team-slug']
+  }
+  Teams.extractTeamMembers = jest.fn().mockReturnValue([authorName])
+  const validation = await author.processValidate(createMockContext(authorName), settings)
+  expect(validation.status).toBe('fail')
+})
+
 test('should pass when the author is a member of the team', async () => {
   const author = new Author()
   const settings = {
@@ -106,6 +188,17 @@ test('should pass when the author is a member of the team', async () => {
   expect(validation.status).toBe('pass')
 })
 
+test('should pass when the author is one_of the members of the team', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    one_of: ['@org/team-slug']
+  }
+  Teams.extractTeamMembers = jest.fn().mockReturnValue([authorName])
+  const validation = await author.processValidate(createMockContext(authorName), settings)
+  expect(validation.status).toBe('pass')
+})
+
 test('should fail when the author is not a member of the team', async () => {
   const author = new Author()
   const authorName = 'mergeable'
@@ -118,6 +211,60 @@ test('should fail when the author is not a member of the team', async () => {
   expect(validation.status).toBe('fail')
 })
 
+test('should fail when the author is not one_of the members of the team', async () => {
+  const author = new Author()
+  const authorName = 'mergeable'
+  const settings = {
+    do: 'author',
+    one_of: ['@org/team-slug']
+  }
+  Teams.extractTeamMembers = jest.fn().mockReturnValue([otherAuthorName])
+  const validation = await author.processValidate(createMockContext(authorName), settings)
+  expect(validation.status).toBe('fail')
+})
+
+test('should pass when the author is not member of the none_of team', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    none_of: ['@org/team-slug']
+  }
+  Teams.extractTeamMembers = jest.fn().mockReturnValue([otherAuthorName])
+  const filter = await author.processValidate(createMockContext(authorName), settings)
+  expect(filter.status).toBe('pass')
+})
+
+test('should fail when the author is member of the none_of team', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    none_of: ['@org/team-slug']
+  }
+  Teams.extractTeamMembers = jest.fn().mockReturnValue([authorName])
+  const filter = await author.processValidate(createMockContext(authorName), settings)
+  expect(filter.status).toBe('fail')
+})
+
+test('should pass when the author is one_of @author', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    one_of: ['@author']
+  }
+  const filter = await author.processValidate(createMockContext(authorName), settings)
+  expect(filter.status).toBe('pass')
+})
+
+test('should fail when the author is none_of @author', async () => {
+  const author = new Author()
+  const settings = {
+    do: 'author',
+    none_of: ['@author']
+  }
+  const filter = await author.processValidate(createMockContext(authorName), settings)
+  expect(filter.status).toBe('fail')
+})
+
 const createMockContext = (author) => {
   return Helper.mockContext({ author })
 }
diff --git a/__tests__/unit/validators/lastComment.test.js b/__tests__/unit/validators/lastComment.test.js
index ead8c2d6..cd2a93d2 100644
--- a/__tests__/unit/validators/lastComment.test.js
+++ b/__tests__/unit/validators/lastComment.test.js
@@ -18,6 +18,137 @@ test('validate returns correctly', async () => {
   expect(results.status).toBe('pass')
 })
 
+test('validate applies user exclusions correctly', async () => {
+  const lastComment = new LastComment()
+
+  const settings = {
+    do: 'lastComment',
+    must_exclude: {
+      regex: 'exclude this'
+    },
+    comment_author: {
+      none_of: ['exclude_author']
+    }
+  }
+
+  let results = await lastComment.processValidate(createMockContext(['exclude this'], ['exclude_author']), settings)
+  // must_exclude is not applied since the commenter is excluded
+  expect(results.status).toBe('pass')
+
+  results = await lastComment.processValidate(createMockContext(['exclude this'], ['some[bot]']), settings)
+  // must_exclude is not applied since the commenting bot is excluded
+  expect(results.status).toBe('pass')
+
+  // must_exclude has no match
+  results = await lastComment.processValidate(createMockContext(['a', 'b'], ['user_a', 'user_b']), settings)
+  expect(results.status).toBe('pass')
+
+  // must_exclude is applied to one comment since the commenter is not in the excluded list
+  results = await lastComment.processValidate(createMockContext(['a', 'exclude this'], ['user_a', 'user_b']), settings)
+  expect(results.status).toBe('fail')
+})
+
+test('validate applies bot exclusions correctly', async () => {
+  const lastComment = new LastComment()
+
+  const settings = {
+    do: 'lastComment',
+    must_exclude: {
+      regex: 'a bot comment'
+    },
+    comment_author: {
+      no_bots: true
+    }
+  }
+
+  // must_exclude is not applied since the commenter is excluded
+  let results = await lastComment.processValidate(createMockContext(['a bot comment'], ['some[bot]']), settings)
+  expect(results.status).toBe('pass')
+
+  // must_exclude has no match
+  results = await lastComment.processValidate(createMockContext(['a', 'b'], ['some[bot]', 'user_b']), settings)
+  expect(results.status).toBe('pass')
+
+  // must_exclude is applied to one comment since the commenter is not in the excluded list
+  results = await lastComment.processValidate(createMockContext(['a', 'a bot comment'], ['some[bot]', 'user_b']), settings)
+  expect(results.status).toBe('fail')
+})
+
+test('validate applies bot exclusions correctly', async () => {
+  const lastComment = new LastComment()
+
+  const settings = {
+    do: 'lastComment',
+    must_exclude: {
+      regex: 'a bot comment'
+    },
+    comment_author: {
+      none_of: ['angry[bot]'],
+      no_bots: false
+    }
+  }
+
+  // must_exclude is applied since the commenting bot is not excluded
+  let results = await lastComment.processValidate(createMockContext(['a bot comment'], ['some[bot]']), settings)
+  expect(results.status).toBe('fail')
+
+  // must_exclude is not applied since the commenting bot is explicitly excluded
+  results = await lastComment.processValidate(createMockContext(['a bot comment'], ['angry[bot]']), settings)
+  expect(results.status).toBe('pass')
+
+  // must_exclude has no match
+  results = await lastComment.processValidate(createMockContext(['a', 'b'], ['user_a', 'user_b']), settings)
+  expect(results.status).toBe('pass')
+
+  // must_exclude is applied to one comment since the commenter is not in the excluded list
+  results = await lastComment.processValidate(createMockContext(['a', 'a bot comment'], ['user_a', 'user_b']), settings)
+  expect(results.status).toBe('fail')
+})
+
+test('validate applies @author exclusions correctly', async () => {
+  const lastComment = new LastComment()
+
+  const settings = {
+    do: 'lastComment',
+    must_exclude: {
+      regex: 'exclude this'
+    },
+    comment_author: {
+      none_of: ['@author']
+    }
+  }
+
+  let results = await lastComment.processValidate(createMockContext(['exclude this'], ['creator']), settings)
+  // must_exclude is not applied since the commenter is excluded
+  expect(results.status).toBe('pass')
+
+  // must_exclude is applied to one comment since the commenter is not in the excluded list
+  results = await lastComment.processValidate(createMockContext(['a', 'exclude this'], ['creator', 'user_b']), settings)
+  expect(results.status).toBe('fail')
+})
+
+test('validate applies @author inclusions correctly', async () => {
+  const lastComment = new LastComment()
+
+  const settings = {
+    do: 'lastComment',
+    must_exclude: {
+      regex: 'exclude this'
+    },
+    comment_author: {
+      one_of: ['@author']
+    }
+  }
+
+  let results = await lastComment.processValidate(createMockContext(['exclude this'], ['creator']), settings)
+  // must_exclude is applied since the commenter is included
+  expect(results.status).toBe('fail')
+
+  // must_exclude is applied to one comment since the commenter is in the included list
+  results = await lastComment.processValidate(createMockContext(['a', 'exclude this'], ['creator', 'user_b']), settings)
+  expect(results.status).toBe('fail')
+})
+
 test('fail gracefully if invalid regex', async () => {
   const lastComment = new LastComment()
 
@@ -85,42 +216,94 @@ test('mergeable is false if must_exclude is one of the lastComment', async () =>
   expect(validation.status).toBe('pass')
 })
 
+test('mergeable is true if single comment got edited, disregarding whether its the last comment', async () => {
+  const lastComment = new LastComment()
+
+  const settings = {
+    do: 'lastComment',
+    must_include: {
+      regex: 'xyz'
+    },
+    must_exclude: {
+      regex: 'ignore'
+    }
+  }
+
+  let validation = await lastComment.processValidate(createMockContext(['abc', 'experimental', 'xyz'], undefined, 'issue_comment'), settings)
+  // must_include is applied for the last comment, when triggered by an edit operation
+  expect(validation.status).toBe('pass')
+
+  validation = await lastComment.processValidate(createMockContext(['abc', 'xyz', '456'], undefined, 'issue_comment'), settings)
+  // must_include is applied although its not the last comment, when triggered by an edit operation
+  expect(validation.status).toBe('pass')
+})
+
 test('complex Logic test', async () => {
   const lastComment = new LastComment()
 
   const settings = {
     do: 'lastComment',
-    or: [{
-      and: [{
+    comment_author: {
+      none_of: ['e1'],
+      no_bots: false
+    },
+    or: [
+      {
+        and: [
+          {
+            must_include: {
+              regex: 'release note: yes',
+              message: 'Please include release note: yes'
+            }
+          },
+          {
+            must_include: {
+              regex: 'lang\\/core|lang\\/c\\+\\+|lang\\/c#',
+              message: 'Please include a language comment'
+            }
+          }
+        ]
+      },
+      {
         must_include: {
-          regex: 'release note: yes',
-          message: 'Please include release note: yes'
+          regex: 'release note: no',
+          message: 'Please include release note: no'
         }
-      }, {
-        must_include: {
-          regex: 'lang\\/core|lang\\/c\\+\\+|lang\\/c#',
-          message: 'Please include a language comment'
-        }
-      }]
-    }, {
-      must_include: {
-        regex: 'release note: no',
-        message: 'Please include release note: no'
       }
-    }]
+    ]
   }
 
-  let validation = await lastComment.processValidate(createMockContext(['experimental', 'xyz', 'release note: no']), settings)
+  let validation = await lastComment.processValidate(createMockContext(['experimental', 'xyz', 'release note: no'], ['u1', 'u1', 'u1']), settings)
   expect(validation.status).toBe('pass')
 
-  validation = await lastComment.processValidate(createMockContext(['123', '456', 'release note: yes']), settings)
+  validation = await lastComment.processValidate(createMockContext(['123', '456', 'release note: yes'], ['u1', 'u1', 'u1']), settings)
   expect(validation.status).toBe('fail')
   expect(validation.validations[0].description).toBe('((Please include a language comment)  ***OR***  Please include release note: no)')
 
-  validation = await lastComment.processValidate(createMockContext(['456', 'lang/core']), settings)
+  validation = await lastComment.processValidate(createMockContext(['456', 'lang/core'], ['u1', 'u1']), settings)
+  expect(validation.status).toBe('fail')
   expect(validation.validations[0].description).toBe('((Please include release note: yes)  ***OR***  Please include release note: no)')
+
+  // correct comments are ignored since the commenter is excluded
+  validation = await lastComment.processValidate(createMockContext(['lang/core', 'release note: yes'], ['e1', 'e1']), settings)
+  expect(validation.status).toBe('fail')
+  expect(validation.validations[0].description).toBe('((Please include a language comment)  ***OR***  Please include release note: no)')
 })
 
-function createMockContext (comments) {
-  return Helper.mockContext({ listComments: Array.isArray(comments) ? comments.map(comment => ({ body: comment })) : [{ body: comments }] })
+function createMockContext (comments, commenters, eventname = 'pull_request') {
+  const constructComment = (comment, commenter) => {
+    const dataComment = {
+      body: comment,
+      user: { login: commenter || 'creator' }
+    }
+    return dataComment
+  }
+
+  return Helper.mockContext({
+    eventName: eventname,
+    issueComment: constructComment(comments, commenters),
+    listComments: Array.isArray(comments)
+      ? comments.map((comment, idx) => constructComment(comment, commenters ? commenters[idx] : undefined))
+      : [constructComment(comments, commenters)]
+  })
 }
diff --git a/docs/changelog.rst b/docs/changelog.rst
index 50640b04..afff51fe 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -1,5 +1,6 @@
 CHANGELOG
 =====================================
+| June 19, 2024: feat: Add options 'one_of' and 'none_of'. Support in filters `payload`, `author`, and in action `lastComment` to filter comments authors `#757 <https://github.com/mergeability/mergeable/pull/757>`_
 | June 12, 2024: feat: Support `issue_comment` event as trigger for actions `#754 <https://github.com/mergeability/mergeable/pull/754>`_
 | June 10, 2024: fix: Docker image not working `#753 <https://github.com/mergeability/mergeable/pull/753>`_
 | June 10, 2024: feat: publish multi arch docker image to dockerhub `#751 <https://github.com/mergeability/mergeable/pull/751>`_
diff --git a/docs/deployment.rst b/docs/deployment.rst
index 7d222403..1a93ede9 100644
--- a/docs/deployment.rst
+++ b/docs/deployment.rst
@@ -23,7 +23,7 @@ The `Probot deployment guide <https://probot.github.io/docs/deployment/>`_ descr
 * Commit statuses - **Read & Write**
 * Single file - **Read-only**
   * Path: ``.github/mergeable.yml``
-* Contents - **Read-Only**
+* Contents - **Read-Only** (Note: the ``merge`` action requires Read & Write)
 * Projects - **Read-Only**
 
 **Organization Permissions:**
diff --git a/docs/filters/author.rst b/docs/filters/author.rst
index 37e25514..c80fad3e 100644
--- a/docs/filters/author.rst
+++ b/docs/filters/author.rst
@@ -6,12 +6,13 @@ Author
       - do: author
         must_include:
             regex: 'user-1'
-            message: 'Custom include message...'
+            message: 'Custom include message...'  # optional
         must_exclude:
             regex: 'user-2'
-            message: 'Custom exclude message...'
+            message: 'Custom exclude message...'  # optional
         team: 'org/team-slug'  # verify that the author is in the team
-        # all of the message sub-option is optional
+        one_of: ['user-1', '@org/team-slug']  # verify author for being one of the users or a team member
+        none_of: ['user-2', '@bot']  # verify author for not being one of the users or the mergeable bot
 
 you can use ``and`` and ``or`` options to create more complex filters
 
diff --git a/docs/filters/payload.rst b/docs/filters/payload.rst
index baa7d18d..21a8d7c2 100644
--- a/docs/filters/payload.rst
+++ b/docs/filters/payload.rst
@@ -34,6 +34,16 @@ An example to check if a `pull_request` event has a ``label`` named `foo`
               regex: 'foo'
               key: 'name'
 
+An example to check whether the initiator of the event is part of a team but not excluded.
+
+::
+
+      - do: payload
+        sender:
+          login:
+            one_of: ['@org/team-slug']
+            none_of: ['banned_user', '@author', '@bot']
+
 
 Each field must be checked using one of the following options
 
@@ -49,6 +59,8 @@ Each field must be checked using one of the following options
         regex: 'Text to exclude'
         regex_flag: 'none' # Optional. Specify the flag for Regex. default is 'i', to disable default use 'none'
         key: 'name' # Optional. If checking an array of objects, this specifies the key to check.
+      one_of: ['user-1', 'user-2'] # Compares the field value for occurance in the list of strings, case-insensitive, annotations supported
+      none_of: ['@author', '@bot'] # Compares the field value for absence in the list of strings, case-insensitive, annotations supported
 
 
 Supported Events:
diff --git a/docs/recipes.rst b/docs/recipes.rst
index 89686b7a..88a83a61 100644
--- a/docs/recipes.rst
+++ b/docs/recipes.rst
@@ -148,6 +148,38 @@ Add a comment on a pull request when it is created
                 Thanks for creating a pull request! A maintainer will review your changes shortly. Please don't be discouraged if it takes a while.
 
 
+React on a comment to merge pull requests
+"""""""""""""""""""""""""""""""""""""""""
+When a human creates a new comment or edits existing comment, ``mergeable`` finds a special command in it, to then execute a merge.
+The comment writer must be different from the PR author and be member of a specified team.
+
+::
+
+    version: 2
+    mergeable:
+      - when: issue_comment.*
+        name: "Merge pull requests when requested via comment"
+        filter:
+          - do: payload
+            sender:
+              login:
+                must_exclude:
+                  regex: '\[bot\]$'
+        validate:
+          - do: lastComment
+            must_include:
+              regex: 'merge$'
+              message: 'Comment "merge" detected, checking eligibility to merge the PR.'
+            must_exclude:
+              regex: '^\[ \]'
+              message: 'Comment contains unchecked items, can't merge yet.'
+            comment_author:
+              one_of: ['@org/product-owners-team']
+              none_of: ['@author']
+        pass:
+          - do: merge
+            merge_method: "squash"
+
 Auto-merge pull requests once all checks pass
 """""""""""""""""""""""""""""""""""""""""""""
 This recipe relies on the fact that the main branch has been protected and only allows merges
diff --git a/docs/validators/author.rst b/docs/validators/author.rst
index 37e25514..c80fad3e 100644
--- a/docs/validators/author.rst
+++ b/docs/validators/author.rst
@@ -6,12 +6,13 @@ Author
       - do: author
         must_include:
             regex: 'user-1'
-            message: 'Custom include message...'
+            message: 'Custom include message...'  # optional
         must_exclude:
             regex: 'user-2'
-            message: 'Custom exclude message...'
+            message: 'Custom exclude message...'  # optional
         team: 'org/team-slug'  # verify that the author is in the team
-        # all of the message sub-option is optional
+        one_of: ['user-1', '@org/team-slug']  # verify author for being one of the users or a team member
+        none_of: ['user-2', '@bot']  # verify author for not being one of the users or the mergeable bot
 
 you can use ``and`` and ``or`` options to create more complex filters
 
diff --git a/docs/validators/lastComment.rst b/docs/validators/lastComment.rst
index da4e1821..9a69e757 100644
--- a/docs/validators/lastComment.rst
+++ b/docs/validators/lastComment.rst
@@ -1,14 +1,53 @@
-Last Comment
-^^^^^^^^^^
+LastComment
+^^^^^^^^^^^
+Validates that the newly created comment contains or excludes given text. When an existing comment is edited, then exactly this one is validated instead.
 
 ::
 
-    - do: lastComment // check if the last comment contains only the word 'merge'
+    - do: lastComment
+      must_include:
+        regex: '/sign'
+        regex_flag: 'none' # Optional. Specify the flag for Regex. default is 'i', to disable default use 'none'
+        message: 'Contributor Agreement signed...'
+      must_exclude:
+        regex: 'incompliant'
+        regex_flag: 'none' # Optional. Specify the flag for Regex. default is 'i', to disable default use 'none'
+        message: 'Violates compliance...'
+      comment_author:
+        one_of: ['user-1', '@author'] # when the option is present, ONLY comments from users in this list will be considered, use @author for PR/Issue author
+        none_of: ['user-2', '@author'] # when the option is present, comments from users in this list will NOT be considered, use @author for PR/Issue author
+        no_bots: true # by default comments from any bots will NOT be considered, set to false to exclude only specific bots explicitly in 'comment_author' option
+
+Simple example:
+::
+
+    # check if the last comment contains only the word 'merge'
+    - do: lastComment
       must_include:
         regex: '^merge$'
 
+Complex example:
+::
+
+    # check if the last comment, not posted by PR/Issue author, meets one of these conditions 
+    # it might have been posted by a bot, except Mergeble itself
+    - do: lastComment
+      comment_author:
+        none_of: ['Mergeable[bot]', '@author']
+        no_bots: false
+      or:
+        - and:
+          - must_exclude:
+              regex: 'block|wip|stale'
+              message: 'pre-requisites are not fulfilled...'
+          - must_include:
+              regex: 'agreed|confirmed|compliant'
+              message: 'pre-requisites are fulfilled...'
+        - must_include:
+            regex: '^/override$'
+            message: 'skip pre-requisite check...'
+
 Supported Events:
 ::
 
     'pull_request.*', 'pull_request_review.*', 'issues.*', 'issue_comment.*'
-
diff --git a/lib/filters/author.js b/lib/filters/author.js
index 642e5c43..cf319534 100644
--- a/lib/filters/author.js
+++ b/lib/filters/author.js
@@ -18,7 +18,9 @@ class Author extends Filter {
         regex_flag: 'string',
         message: 'string'
       },
-      team: 'string'
+      team: 'string',
+      one_of: 'array',
+      none_of: 'array'
     }
   }
 
diff --git a/lib/filters/options_processor/options/none_of.js b/lib/filters/options_processor/options/none_of.js
new file mode 100644
index 00000000..d2401f91
--- /dev/null
+++ b/lib/filters/options_processor/options/none_of.js
@@ -0,0 +1,11 @@
+const listProcessor = require('../../../validators/options_processor/listProcessor')
+const noneOf = require('../../../validators/options_processor/options/none_of')
+
+class NoneOf {
+  static async process (context, filter, input, rule) {
+    const candidates = await listProcessor.process(rule.none_of, context)
+    return noneOf.process(filter, input, { none_of: candidates })
+  }
+}
+
+module.exports = NoneOf
diff --git a/lib/filters/options_processor/options/one_of.js b/lib/filters/options_processor/options/one_of.js
new file mode 100644
index 00000000..9e746b81
--- /dev/null
+++ b/lib/filters/options_processor/options/one_of.js
@@ -0,0 +1,11 @@
+const listProcessor = require('../../../validators/options_processor/listProcessor')
+const oneOf = require('../../../validators/options_processor/options/one_of')
+
+class OneOf {
+  static async process (context, filter, input, rule) {
+    const candidates = await listProcessor.process(rule.one_of, context)
+    return oneOf.process(filter, input, { one_of: candidates })
+  }
+}
+
+module.exports = OneOf
diff --git a/lib/filters/payload.js b/lib/filters/payload.js
index affbc998..138519bb 100644
--- a/lib/filters/payload.js
+++ b/lib/filters/payload.js
@@ -4,18 +4,18 @@ const constructError = require('./options_processor/options/lib/constructError')
 const _ = require('lodash')
 const { forEach } = require('p-iteration')
 
-const options = ['boolean', 'must_include', 'must_exclude']
+const options = ['boolean', 'must_include', 'must_exclude', 'one_of', 'none_of']
 
-async function recursveThruFields (filterObj, currentPath, output, payload, field) {
+async function recursveThruFields (filterObj, context, currentPath, output, payload, field) {
   await forEach(Object.keys(field), async key => {
     if (key === 'do') return
 
     if (options.includes(key)) {
-      output.push(await filterObj.processOptions(filterObj, payload, Object.assign(field, { do: currentPath })))
+      output.push(await filterObj.processOptions(context, payload, Object.assign(field, { do: currentPath })))
     } else if (_.isUndefined(payload[key])) {
       output.push(constructError(filterObj, '', field, `${currentPath + '.' + key} does NOT exist`))
     } else {
-      await recursveThruFields(filterObj, `${currentPath + '.' + key}`, output, payload[key], field[key])
+      await recursveThruFields(filterObj, context, `${currentPath + '.' + key}`, output, payload[key], field[key])
     }
   })
 }
@@ -36,7 +36,7 @@ class Payload extends Filter {
   async filter (context, settings) {
     const output = []
 
-    await recursveThruFields(this, 'payload', output, this.getPayload(context, true), settings)
+    await recursveThruFields(this, context, 'payload', output, this.getPayload(context, true), settings)
 
     const filter = {
       name: settings.do,
diff --git a/lib/validators/author.js b/lib/validators/author.js
index 3fb555f8..88f66ed2 100644
--- a/lib/validators/author.js
+++ b/lib/validators/author.js
@@ -1,5 +1,7 @@
 const { Validator } = require('./validator')
 const Teams = require('./options_processor/teams')
+const ListProcessor = require('./options_processor/listProcessor')
+
 class Author extends Validator {
   constructor () {
     super('author')
@@ -18,7 +20,9 @@ class Author extends Validator {
         regex_flag: 'string',
         message: 'string'
       },
-      team: 'string'
+      team: 'string',
+      one_of: 'array',
+      none_of: 'array'
     }
   }
 
@@ -33,6 +37,13 @@ class Author extends Validator {
       delete settings.team
     }
 
+    if (settings.one_of) {
+      settings.one_of = await ListProcessor.process(settings.one_of, context)
+    }
+    if (settings.none_of) {
+      settings.none_of = await ListProcessor.process(settings.none_of, context)
+    }
+
     return this.processOptions(settings, payload.user.login)
   }
 }
diff --git a/lib/validators/lastComment.js b/lib/validators/lastComment.js
index ef8547f7..4b8af926 100644
--- a/lib/validators/lastComment.js
+++ b/lib/validators/lastComment.js
@@ -1,13 +1,17 @@
 const { Validator } = require('./validator')
+const ListProcessor = require('./options_processor/listProcessor')
+const _ = require('lodash')
 
 class LastComment extends Validator {
   constructor () {
     super('lastComment')
+    // Ignore 'issue_comment.deleted' to not validate what obviously isn't wanted anymore
     this.supportedEvents = [
       'pull_request.*',
       'pull_request_review.*',
       'issues.*',
-      'issue_comment.*'
+      'issue_comment.created',
+      'issue_comment.edited'
     ]
     this.supportedSettings = {
       must_include: {
@@ -19,18 +23,73 @@ class LastComment extends Validator {
         regex: ['string', 'array'],
         regex_flag: 'string',
         message: 'string'
+      },
+      comment_author: {
+        one_of: 'array',
+        none_of: 'array',
+        no_bots: 'boolean'
       }
     }
   }
 
   async validate (context, validationSettings) {
-    const comments = (await this.githubAPI.listComments(context, this.getPayload(context).number)).data
+    let excludeBots = true
+    const commentAuthorOption = { do: validationSettings.do }
+    if (validationSettings.comment_author) {
+      if (validationSettings.comment_author.one_of) {
+        commentAuthorOption.one_of = await ListProcessor.process(validationSettings.comment_author.one_of, context)
+      }
+      if (validationSettings.comment_author.none_of) {
+        commentAuthorOption.none_of = await ListProcessor.process(validationSettings.comment_author.none_of, context)
+      }
+      if (validationSettings.comment_author.no_bots === false) {
+        excludeBots = false
+      }
+    }
+    delete validationSettings.comment_author
+
+    // payload is the issue or pull_request that the comment was posted in
+    const payload = this.getPayload(context)
+    const issueNumber = payload.number
+    let comments = []
+    if (context.eventName === 'issue_comment') {
+      // the single comment that got created/edited
+      comments = [this.getPayload(context, true).comment]
+    } else {
+      // all the comments of the issue or pr
+      comments = (await this.githubAPI.listComments(context, issueNumber)).data
+    }
+
+    comments = await this.filterByCommentAuthor(comments, excludeBots, commentAuthorOption)
 
     return this.processOptions(
       validationSettings,
       comments.length ? comments[comments.length - 1].body : ''
     )
   }
+
+  async filterByCommentAuthor (comments, excludeBots, commentAuthorOption) {
+    let filteredComments = Array.from(comments)
+
+    // exclude all GitHub bots by default
+    if (excludeBots) {
+      filteredComments = _.reject(filteredComments, c => c.user.login.toLowerCase().endsWith('[bot]'))
+    }
+
+    // for each comment, process comment_author option and drop those which don't pass
+    if (commentAuthorOption) {
+      const filtered = []
+      for (const c of filteredComments) {
+        const result = await this.processOptions(commentAuthorOption, c.user.login)
+        if (result.status === 'fail') {
+          filtered.push(c)
+        }
+      }
+      filteredComments = _.difference(filteredComments, filtered)
+    }
+
+    return filteredComments
+  }
 }
 
 module.exports = LastComment
diff --git a/lib/validators/options_processor/listProcessor.js b/lib/validators/options_processor/listProcessor.js
new file mode 100644
index 00000000..b2444411
--- /dev/null
+++ b/lib/validators/options_processor/listProcessor.js
@@ -0,0 +1,43 @@
+const Teams = require('./teams')
+const TeamNotFoundError = require('../../errors/teamNotFoundError')
+const EventAware = require('../../eventAware')
+const searchAndReplaceSpecialAnnotations = require('../../actions/lib/searchAndReplaceSpecialAnnotation')
+const { forEach } = require('p-iteration')
+
+/**
+ * ListProcessor replaces annotations in an array of strings.
+ * Team slugs are exploded to the members they contain.
+ * All elements are lowercased to be used for comparison with the one_of or none_of option processor.
+ * @returns a new array containing the replacements
+ */
+class ListProcessor {
+  static async process (list, context) {
+    if (!Array.isArray(list)) {
+      list = [list]
+    }
+
+    const candidates = []
+    const payload = (new EventAware()).getPayload(context)
+    await forEach(list, async (element) => {
+      if (element.match(/^@.+\/[^/]+$/)) {
+        try {
+          const teamMembers = await Teams.extractTeamMembers(context, [element])
+          candidates.push(...teamMembers.map((m) => m.toLowerCase()))
+        } catch (err) {
+          if (err instanceof TeamNotFoundError) {
+            // uncritical, is just no candidate
+          } else {
+            throw err
+          }
+        }
+      } else {
+        const replacement = searchAndReplaceSpecialAnnotations(element, payload)
+        candidates.push(replacement.toLowerCase())
+      }
+    })
+
+    return candidates
+  }
+}
+
+module.exports = ListProcessor
diff --git a/lib/validators/options_processor/options/none_of.js b/lib/validators/options_processor/options/none_of.js
new file mode 100644
index 00000000..1a8d9113
--- /dev/null
+++ b/lib/validators/options_processor/options/none_of.js
@@ -0,0 +1,26 @@
+const UNKNOWN_INPUT_TYPE_ERROR = 'Input type invalid, expected string as input'
+const LIST_NOT_FOUND_ERROR = 'Failed to run the test because \'none_of\' option is not present. Please check README for more information about configuration'
+
+class NoneOf {
+  static process (validatorContext, input, rule) {
+    const filter = rule.none_of
+    if (typeof input !== 'string') {
+      throw new Error(UNKNOWN_INPUT_TYPE_ERROR)
+    }
+    if (!Array.isArray(filter)) {
+      throw new Error(LIST_NOT_FOUND_ERROR)
+    }
+
+    const isExcluded = !filter.includes(input.toLowerCase())
+
+    const successMessage = `'${input}' is not in the none_of list'`
+    const failureMessage = `'${input}' is in the none_of list'`
+
+    return {
+      status: isExcluded ? 'pass' : 'fail',
+      description: isExcluded ? successMessage : failureMessage
+    }
+  }
+}
+
+module.exports = NoneOf
diff --git a/lib/validators/options_processor/options/one_of.js b/lib/validators/options_processor/options/one_of.js
new file mode 100644
index 00000000..23ad814a
--- /dev/null
+++ b/lib/validators/options_processor/options/one_of.js
@@ -0,0 +1,26 @@
+const UNKNOWN_INPUT_TYPE_ERROR = 'Input type invalid, expected string as input'
+const LIST_NOT_FOUND_ERROR = 'Failed to run the test because \'one_of\' option is not present. Please check README for more information about configuration'
+
+class OneOf {
+  static process (validatorContext, input, rule) {
+    const filter = rule.one_of
+    if (typeof input !== 'string') {
+      throw new Error(UNKNOWN_INPUT_TYPE_ERROR)
+    }
+    if (!Array.isArray(filter)) {
+      throw new Error(LIST_NOT_FOUND_ERROR)
+    }
+
+    const isIncluded = filter.includes(input.toLowerCase())
+
+    const successMessage = `'${input}' is in the one_of list'`
+    const failureMessage = `'${input}' is not in the one_of list'`
+
+    return {
+      status: isIncluded ? 'pass' : 'fail',
+      description: isIncluded ? successMessage : failureMessage
+    }
+  }
+}
+
+module.exports = OneOf
diff --git a/lib/validators/validator.js b/lib/validators/validator.js
index 8fe7c38c..fbf4d2d0 100644
--- a/lib/validators/validator.js
+++ b/lib/validators/validator.js
@@ -19,7 +19,9 @@ const DEFAULT_SUPPORTED_OPTIONS = [
   'no_empty',
   'required',
   'jira',
-  'team'
+  'team',
+  'one_of',
+  'none_of'
 ]
 
 class Validator extends EventAware {