Deadpool has become known as one of the craziest characters in the entire Marvel Universe. First introduced in 1991, his popularity has surged over the years, making him a fan favorite. With his own movie releasing, Deadpool’s unique brand of humor and fourth wall awareness will get him more attention than ever. He definitely has a history in video games already, with appearances in 15 different Marvel games.
X-Men Legends II: Rise of Apocalypse (2005)

Deadpool’s first appearance in games was the sequel to an X-Men beat-em-up. He was an unlockable character, complete with his usual biting wit. He was voiced by John Kassir at this point and not Nolan North.
Marvel: Ultimate Alliance (2006)
Deadpool was again featured in another Marvel beat-em-up. Ultimate Alliance compiled a dream team of heroes for you to choose from, each with their own sets of abilities and strengths.
X-Men Origins: Wolverine (2009)
While the Wolverine game was significantly better than its movie counterpart, unfortunately Deadpool’s character remained the same. Featured as an endgame boss, the Merc with a Mouth for some reason had his mouth sealed shut. There are some segments where you hear dialogue from the mercenary Wade Wilson, but the game’s version is just as much of a disappointment for the character.