Spawn - In The Demon's Hand cheats and cheat codes for Dreamcast

Unlock character galleries
Finish the tournament battle with any character to unlock
their gallery.

Unlock hidden characters
Finish boss attack in arcade mode with any character

Powered-up characters:
When you character has almost maximum health, press R + B or X + A + B
to change to alternate powered-up form. 
Press R + B or X + A + B again to back to normal mode.

Character endings:
Play arcade boss mode in multi-player on the hardest difficulty mode.

Unlock Black Brimstone:
Beat the game in Boss mode with every character. You do not have to finish 
the tournament mode. Highlight Brimstone in any mode, after hold L + R, 
and push A.

Beat the indicated Boss modes in multi-player mode 
to unlock additioanl characters:

Unlock Dark Ages Spawn: Beat Boss mode with CPU Asout continuing 5 times.
Unlock Admonisher: Beat Boss mode with CPU Asout continuing 14 times. 
Unlock Spawn I: Beat Boss mode with CPU Asout continuing 1 time.
Unlock Spawn IV: Beat Boss mode with CPU Asout continuing 10 times.

Beat the indicated Boss modes in single player mode with 
the indicated character to unlock additioanl characters:

Zombie I:Beat Boss mode with Gatekeeper.
Wolf I: Beat Boss mode with Cy-Gor.
Vindicator: Beat Boss mode with Clown.
Vaporizer: Beat Boss mode with Vandalizer.
Vandalizer: Beat Boss mode with Cogliostro.
Vacillator: Beat Boss mode with Vindicator.
The Mafia: Beat Boss mode with Sam.
The Curse: Beat Boss mode with Spawn.
Sub Curse: Beat Boss mode with The Curse.
Soleil: Beat Boss mode with Grace.
Soldier I: Beat Boss mode with Twitch.
Skeleton I: Beat Boss mode with Al Simmons .
Overtkill: Beat Boss attack mode with Brimstone.
Hell Spawn: Beat Boss mode with Redeemer.
Green Beret A: Beat Boss mode with Jessica.
Gatekeeper: Beat Boss mode with Hell Spawn.
Cy-Gor: Beat Boss mode with Tremor.
Army A:Beat Boss mode with Overtkill.
Angels E: Beat Boss mode with Tiffany.
Angel Teneres: Beat Boss mode with Soleil.