Deadpool (Wade Winston Wilson) is a fictional character, a mercenary and anti-hero appearing in comic books published by Marvel Comics. Created by artist Rob Liefeld and writer Fabian Nicieza, Deadpool first appeared in New Mutants #98 (Feb. 1991). Also known as the "Merc with a Mouth," Deadpool is famous for his talkative nature and his tendency to break the fourth wall, which is used by writers for humorous effect.
Deadpool first appearance (New Mutants #98)
New Mutants #098 – Introducing The Lethal Deadpool
01 – The Circle Chase #1-4
02 – Sins Of The Past #1-4
03 – Deadpool Volume 1 #0-69
04 – Taskmaster Volume 1 #1-4