Teen Titans cheats and cheat codes for Gamecube

Unlock Arenas:
Titan Tower - Finish Slade Ambush Stage
The Hive - Finish Hive Academy Stage
Slade's Lair - Finish Final Clash Stage
Sky Needle - Finish Titan Tower Stage
Raven's Mirror - Finish Thriller Driller Stage
Mumbo's Big Top - Finish 2nd part of Magic Mayhem Stage
Mad Mansion - Finish 1st part of Jail of Horror Stage
Larry's World - Finish Danger Yard Stage
City Cathedral - Finish City Night Showdown Stage

Characters for Master of Games Mode:
Wildebeest - Finish City Night Showdown Stage 
White Raven - Finish Power Plant Stage 
Trigon - Finish Slade Ambush Stage 
Terra - Finish Dock Duel Stage 
Tempest - Finish An Old Foe Stage 
Speedy - Finish Slade Ambush Stage 
Slade Minion - Finish Danger Yard Stage 
Slade - Finish Final Clash Stage 
Robin the Apprentice - Finish Final Clash Stage 
Red X - Finish 2nd part of Magic Mayhem Stage 
Red Raven - Finish 2nd Part of Jail of Horror Stage 
Plasmus Kid - Finish 1st part of Jail of Horror Stage 
Plasmus - Finish 2nd Part of Jail of Horror Stage 
Mumbo Jumbo - Finish 2nd part of Magic Mayhem Stage 
Mammoth - Finish Hive Academy Stage 
Mad Mod - Finish City Night Showdown Stage 
Jinx - Finish Hive Academy Stage 
Hotspot - Finish 2nd Part of Jail of Horror Stage 
Hive Soldier - Finish Titan Tower Stage 
Gizmo - Finish Hive Academy Stage 
Fang - Finish 1st part of Jail of Horror Stage 
Dr. Light - Finish 2nd Part of Jail of Horror Stage 
Cyclone - Finish Hive Academy Stage 
Control Freak - Finish Dock Duel Stage 
Cinderblock - Finish City Night Showdown Stage 
Bunnyguard - Finish 1st part of Magic Mayhem Stage 
Bumble Bee - Finish 1st part of Magic Mayhem Stage 
Blocker - Finish Urban Chaos Stage 
Blackfire - Finish City Night Showdown Stage 
B.B. The Clown - Finish 2nd part of Magic Mayhem Stage 
B. B. the MMM Employee - Finish Thriller Driller Stage 

Unlock Multiplayer Mode Characters:
Finish the story mode

Unlock Multiplayer Mode Levels:
Finish the story mode