Games: Quake, Quake II, Quake III Arena, Battlezone, Daikatana, Anachronox, Max Payne, Hyperspace Delivery Boy!, Hitman 2: Silent Assassin, Red Faction (N-Gage version), SuperTux, Congo Cube, Eternal Daughter, Psychonauts, SiN, SiN Episodes: Emergence, Fortress Forever, Sven Co-op, Wacky Wheels (Various)
Surely the easter egg with the most individual appearances in games, Dopefish is a simple-minded, goofy cartoon fish that has become a long-running in-joke in the PC development scene. The character was created by id Software's Tom Hall, while sketching possible character designs for the 1991 PC title Commander Keen IV. "I just drew this stupid little fish," reflects Hall, whose buck-toothed creation has been hidden in an impressive range of games since the early-'90s, including Daikatana, Anachronox, Max Payne, and Hitman 2: Silent Assassin. A zombified Dopefish appears in Quake III Arena, and there's even an official website."
Apparently they're counting the suckerfish as a dopefish. Suckerfish are slim. Dopefish are fat. Are suckerfish bucktoothed like the dopefish?