Playstation 2 Cheats: Duel Masters : Cobalt Cheats

Unlock Caitlan:
To get Caitlan, complete Rusty's story

Unlock Knight:
To get Knight, complete everyone's story.

Unlock Monks:
To get the monks, you must defeat them the first time.

Unlock Earl:
To get Earl, complete Trey's story

Unlock Widow:
To get the Widow, defeat her at the end of the tournament.

Unlock Jalen:
To get Jalen, complete Rebecca's story.

Unlock Sera:
To get Sera, complete Luc's story.

Unlock Marcus:
To get Marcus, complete Flynn's story.