User who deleted comment is assumed to either be moderator or owner of comment
40406
Mod shows up with OP background when viewing deleted comments
31857
Where did this user's rep go?
99965
What to do with users having access to moderator tools?
142011
Allow retracting a moderator flag if the post has been deleted and I don't have enough reputation to see deleted posts
138860
Can suspended users post comments? Get notifications? What happens to their reputation?
113483
Allow diamond moderators to comment on deleted or locked items
63450
Why did this edit get attributed to the community user?
89566
Touching a comment owned by a deleted user crashes Android app
105134
Why isn't the username obfuscated as one of the close-voters once the user is deleted?
51844
Comments aren't updated after account removal
99742
Allow moderators to see delete/undelete activity on users' profiles
107699
When should comments be flagged/deleted on per-site metas?
55823
How's it fair for a moderator to delete my account and dissociate my questions and answers?
81558
Lost reputation due to removed post
109169
Do answers left on questions that subsequently get deleted impact the Answer Ban criteria for those users?
68616
when are all comments deleted?
133230
Why is deleting comments allowed?