Deadpool #39 2011

Deadpool #39 (2014) concludes the AXIS tie-in, featuring Deadpool as the inverted Zenpool, a pacifist attempting to aid his allies against the inverted X-Men. Following his head's reattachment by Evan and the curing of his North Korean Faux-Men friends, Deadpool sheds his peaceful persona. This issue is notable for marking the end of the Zenpool era and the Merc with a Mouth's definitive return to his classic red and black uniform and chaotic attitude, a key moment in his character's evolution.