I need cheats 4 sonic adveture 2

Please I really need cheats for sonic adventure 2, i heard you could play hidden characters. If you know a cheat for it tell me!

:o kris says get them yourself you lazy [censored]

Okay if you browse the net with dc here is the link for game saves for sonic 2

http://dreamcast.planetweb.com/gamer...ml?game=sonic2

now for cheats i recommend game winners and there is probably better ones out there that some other people will post in here aswell

http://www.gamewinners.com/DC/SonicAdventure2.htm