Deadpool first appeared in The New Mutants.
Deadpool . Created by artist/writer Rob Liefeld and writer Fabian Nicieza , the character first appeared in The New Mutants # 98 ( cover-dated February 1991 ) . Initially Deadpool was depicted as a supervillain when he made his first appearance in The New Mutants and later in issues of X-Force , but later evolved into his more recognizable antiheroic persona . New Mutants . Like its parent title , The New Mutants highlighted interpersonal and group conflict as well as action and adventure , and featured a large ensemble cast , including the introduction of cult figure Deadpool .