| image= Marcus Shirock, is an American film actor, television actor and voice actor. He is probably best known for the role of Ammath from the film The Legend of Simon Conjurer in 2006 who he starred with Jon Voight, the role of Tibor from the TV show Angel. Marcus was also cast by Sam Raimi as the prototype for the costume for the movie Spider-Man. He also provided the voice and sound effects for Monster-Ock in the Spider-Man video game in 2000 and the sound effects for the symbiots. He also provided the sound effects for Ultimate Carnage in the Ultimate Spider-Man video game. Marcus Shirock was born in Washington, D.C., USA.