Wade Wilson is a former test subject of the Weapon X program, possessing a regenerative healing factor and an unstable compiling of other Weapon X experiments. Deadpool's powers and personality traits combine to make a wild, mentally unstable, and unpredictable mercenary. Deadpool has been a member of X-Force and the Thunderbolts, and a self-professed member of the X-Men and Avengers. The Merc with a Mouth is infamous for breaking the fourth wall.