Wolverine is a fictional character, a superhero that appears in comic books published by Marvel Comics. The character first appeared in Incredible Hulk #180 (October 1974) and was created by writer Len Wein and Marvel art director John Romita Sr., who designed the character, and was first drawn for publication by Herb Trimpe.
Wolverine later joined the X-Men's "All New, All Different" roster in Giant-Size X-Men #1 (May 1975). X-Men writer Chris Claremont played a significant role in the character's subsequent development as well as artist/writer John Byrne, who insisted on making the character older than the other X-Men. Artist Frank Miller collaborated with Claremont and helped to revise the character with a four-part eponymous limited series from September to December 1982 in which Wolverine's catch phrase, "I'm the best there is at what I do, but what I do isn't very nice," debuted.