Logan, also known as Wolverine, is a fictional character from Marvel Comics. Created by writer Len Wein and artist John Romita Sr., he first appeared in The Incredible Hulk #180 in 1974. Logan is a mutant with regenerative healing abilities, enhanced senses, and retractable bone claws coated with the indestructible metal adamantium. His past is shrouded in mystery, filled with trauma and loss, which contributes to his rugged and often solitary demeanor.

Wolverine is a key member of the X-Men, a group of mutants dedicated to protecting a world that fears and hates them. Despite his rough exterior, Logan has a strong sense of justice and loyalty to his friends. His adventures span across various timelines and dimensions, often exploring themes of identity, redemption, and the struggle between his animalistic instincts and his humanity.