Deadpool made his initial appearance in New Mutants #98 as a villain. Rob Liefield being a fan of Teen Titans created a character like Deathstroke from Teen Titans. Henceforth his actual name was”Wade Wilson” as an homage and inside-joke to”Slade Wilson” who is the known as the villain Deathstroke.
After appearing in X-Force as a recurring character, he began appearing in other marvel comics like Daredevil, The Avengers and Heroes for Hire.
Beginning in 1993 he obtained his very own minseries titled The Circle Chase. This was followed by yet another mini-series in 1994. Over time he has gone to join the X-Force, tried to join the X-men and awakened with Cable several times. He’s also joined forces with other heroes such as Captain America, Wolverine and Spider-Man.
While his origins are hard to decipher because of his deranged mental condition, he is commonly shown as having a rough childhood and following teenage years. He was abused by his mother and/or dad (a war veteran) and was shown to be a delinquent in his younger years and frequently getting into trouble. After trying out for the Army and being washed out he was soon diagnosed with cancer.
At his wit’s end he was invited and inducted into the secret super soldier program called Weapon X. Promising to cure his cancer Wade Wilson didn’t have any choice but to join.
Thought to be of no more use they then sent Wade to a hospice to die. At the hospice other people which were experimented on and delivered to the hospice had a”deadpool”, a betting pool to determine who would die next. Wade assisted a fellow inmate be put out of his misery after being lobotimized and being in incredible pain. The physicians seeing that he was of no use and potentially a threat to others and near death decided to put Wade Wilson from his misery. Wade Wilson had his heart taken out and in that instant his latent healing ability given to him by experimentation kicked in.
Breaking from this facility, Wade ventured on his own and starting calling himself”Deadpool” after losing all of his memories. He started wearing a black and red costume similar to Spider-man’s and became an expert in many martial arts and use of weaponry such as swords and firearms. Deadpool is one of the best assassins in the Marvel comics world and his famous for his mouth as a lot of his unorthodox fighting style.
Currently he is with no healing power and he is married to The Queen of the Undead Shiklah.