Wolverine (birth name: James Howlett; alias: Logan and Weapon X) is a fictional character appearing in American comic books published by Marvel Comics, mostly in association with the X-Men. He is a mutant who possesses animal-keen senses, enhanced physical capabilities, a powerful regenerative ability known as a healing factor, and three retractable claws in each hand. Wolverine has been depicted variously as a member of the X-Men, X-Force, Alpha Flight, the Fantastic Four, and the Avengers. The character appeared in the last panel of The Incredible Hulk #180 before having a larger role in #181 (cover-dated November 1974). He was created by Marvel editor-in-chief Roy Thomas, writer Len Wein, and Marvel art director John Romita Sr. Romita designed the character's costume, but the character was first drawn for publication by Herb Trimpe. Wolverine then joined a revamped version of the superhero team the X-Men, where eventually writer Chris Claremont, artist Dave Cockrum Dave Cockrum, and artist-writer John Byrne would play significant roles in the character's development. Artist Frank Miller collaborated with Claremont and helped revise the character with a four-part eponymous limited series from September to December 1982, which debuted Wolverine's catchphrase, "I'm the best there is at what I do, but what I do best isn't very nice."