"Shadowman" is a comic book character published by Valiant Comics. He first appeared in 1992 and is known for his supernatural abilities, which include the power to travel between the living world and the Deadside, a dark dimension filled with spirits and monsters. The character's real name is Jack Boniface, who becomes the Shadowman to protect humanity from evil forces. The storyline often revolves around Jack's struggle against various supernatural threats while grappling with his own identity and responsibilities. The series combines elements of horror, fantasy, and action, making it a unique addition to the comic book genre. Shadowman has also appeared in video games and other media, expanding his influence beyond comics.