The Anti Plot Bunny Agency was created by BiteMeTechie for the Stargate Atlantis fanfiction When Plot Bunnies Attack. It is a fandom within fandom. The role of an agent of the APBA is to go to various fandoms and destroy plot bunnies, Mary-Sues, and any other stereotypical cliches in the fandom that they have been assigned to. An agent of the APBA is considered an original character.
"Oh thank Bob you're here. It's about time the Anti Plot Bunny Agency got involved! If I see ONE MORE Gary-Stue I'm going to FREAK."