First Appearance: The Incredible Hulk #180, Oct 1974: Star of comics, games, TV, and the big screen, Wolverine was never sillier than in the X-Men cartoon where he would only ever cut fences and locks with his Adamantium claws, like some human lockpick.
First Appearance: Tales of Suspense #39, March 1963: Genius, alcoholic, and all-round supercool bro Tony Stark has long been Marvel's most political creation, used to discuss Vietnam, the cold war, and corporate crime. All while shooting repulsors from his hands and flying on rocket boots.
First Appearance: Captain America Comics #1, March 1941: Steve Rogers wanted to fight for his country, so his country dosed him up on Super Soldier Serum and sent him to Germany to punch Hitler in the face, then to Japan to punch Ryu in the face.
First Appearance: Fantastic Four #18 Sep 1963: Shapeshifting alien Kl'rt has the powers of all four of the Fantastic Four but has long been a second=tier villain. His appearance in MVC3 is as welcome as a tarantula's appearance in your underpants.
First Appearance: Journey Into Mystery #83, August 1964: Sentenced by his father to walk the Earth in the body of a man, Thor trades place with Dr Donald Blake when someone buys a ticket for the pain express and needs to be belted with a bloody great hammer.
First Appearance: Fantastic Four #5, July 1962: The greatest baddy in comic book history can beat any man by out-thinking them. Doom's only intellectual superior is Reed Richards, which makes it a daily bummer for Doom that Reed is his sworn enemy.