The Uncanny X-Men #221 1st appearance of Mr. Sinister. (Bes..
Added 2020-09-08 14:00:12 +0000 UTCThe Uncanny X-Men #221 1st appearance of Mr. Sinister. (Best name for a villain ever, if you ask me)
The Uncanny X-Men #221 1st appearance of Mr. Sinister. (Best name for a villain ever, if you ask me)
