The bulk update request #2122 is active.
change category mr. (0) -> invalid
Reason: For some reason this is currently classified as an artist tag, but no way in hell is it ever going to show up as anything other than the result of a missing underscore.
https://e621.net/post_versions?commit=Search&search%5Btags_added%5D=mr.
EDIT: The bulk update request #2122 (forum #328850) has been approved by @bitWolfy.
Updated by auto moderator