Mark Bagley is an American comic book artist known for his work in the superhero genre. He gained prominence in the 1990s, particularly for his contributions to Marvel Comics, where he illustrated popular titles such as Spider-Man and Thunderbolts. His dynamic art style and ability to convey action have made him a favorite among fans. Throughout his career, Bagley has collaborated with various writers and artists, helping to shape the visual storytelling of many iconic characters. He is also recognized for his work on Ultimate Spider-Man, which redefined the character for a new generation and received critical acclaim.