Old Man Logan is an alternative version of the Marvel Comics character Wolverine. This character is an aged Wolverine set in an alternate future universe designated Earth-807128, where the supervillains overthrew the superheroes. Introduced as a self-contained story arc within the Wolverine ongoing series by writer Mark Millar and artist Steve McNiven, the character became popular with fans. After the Death of Wolverine, X-23 took the mantle of Wolverine, but Old Man Logan was brought in to serve as an X-Man and featured in his own ongoing series.