Extraordinary X-Men 002 Mr Sinister
With X-Men: Apocalypse now in theaters, Evan Valentine runs down the Top 10 mutants we need to see in future movies that haven't yet appeared.
Mister Sinister & Carnage are some of the BEST Marvel VILLAINS!
X-Factor Forever seems like the perfect book for that sort of thing. X-Factor Forever and Ever
Mister Sinister - Marvel Comics Database