Deadpool

Wade Wilson, known as  Deadpool  is an international mercenary who commonly distracts his opponents with jokes or other words, or just talks for the fun of it, earning him the name " the Merc with a Mouth ".

Origin
Wade Wilson was an international assassin who had worked for various governments when he developed an aggressive cancer. In an effort to find a cure, he enrolled in the Weapon X program in Canada, which gave him a healing factor from another member and set him to work for them. When he killed a team member, he was thrown out of the program and was sent to have his abilities removed, where he was experimented on instead. The results of his stay there were a diminished mental state, a healing factor that could not cure his cancer or heal his scars, an infatuation with death, and his freedom to return to for-hire mercenary work. As "The Merc with a Mouth" he set out as Deadpool to kill and have a good time doing it.