Breen Frazier is a freelance writer best known for his work on the television series Alias, which he began writing for during its second season. Additionally Frazier wrote an Alias prequel novel entitled Infiltration, as well as the animated short, Animated Alias: Tribunal, a story set between seasons two and three of Alias. Frazier also wrote the story for the 2004 video game, Alias.
Frazier was a writer and an executive producer for Criminal Minds.