Enter the X-Men
When Wein wrote Wolverine's first adventure, he'd unwittingly caught a glimpse of his future: the X-Men. At the time, this team of mutants – people born with innate superpowers which typically activated during adolescence, rather than acquiring them through spider bites or gamma bombs – was that rarest of beasts: a co-creation of Marvel prime movers Jack Kirby and Stan Lee that never quite clicked with audiences. Wein had heard scuttlebutt that Marvel was looking to bring the title back, so in addition to making Wolverine an operative of the Canadian government, Wein called him a mutant. This way, any future X-Men revival would have another character to draw from. Little did he know that he'd be helming that revival himself in the form of May 1975's one-off Giant-Size X-Men #1. After a directive from Marvel brass to seed the title with international characters in order to maximize its global appeal, the Canadian character fit right in alongside the Russian strongman Colossus, German circus freak Nightcrawler, Kenyan weather goddess Storm and the rest of the cosmopolitan crew. A costume tweak by artist Dave Cockrum was further modified, albeit accidentally, by cover artist Gil Kane, whose accidental extension of the points on Wolverine's mask so impressed Cockrum that he redrew the interior pages so that Wolverine would match it throughout.