Wolverine

Wolverine is a fictional superhero from the Marvel Universe. He made his first appearance in an issue of The Incredible Hulk, a comic books series that starred Hulk, but he really got big when he appeared in X-Men. Wolverine was also a member of the Avengers.

In an alternate reality, Wolverine was a real person, who helped his fellow Avengers rescue the president from the clutches of Lex Luthor and the Legion of Doom. Wolverine shakes hands with the president, but he accidentally cuts his hand off with his adamantium claws.

Appearance
Meanwhile, At The Hall Of Justice
 * Superman's Dark Secret