Clay Fighter 63 1/3: Sculptor's Cut

Go to the fighter selection screen, then enter the following button
combinations. If the code is accepted you should hear a sound.
After, highlight the "?" box and press R.

Unlock Earthworm Jim
Hold Z and press B, C-Left , C-Up, C-Right, C-Down, C-Up after
highlight the "?" box and hit R.

Unlock High Five
Hold Z and press C-Up, C-Down, C-Left, C-Right, B, A after
highlight the "?" box and hit R.

Unlock Boogerman
Hold Z and hit B, B, C-Right, C-Right, C-Left, C-Left after
highlight the "?" box and hit R.

Unlock Sumo Santa
Hold Z and press A, C-Right, A, C-Right, C-Down, C-Up after
highlight the "?" box and hit R.

Change fighter color
Highlight a character and hit C-Down.

Select random fighter
At the fighter selection screen, tap L + R.

Programmer's mode
Hold L and hit A, B, A, B, A, B, C-Left, C-Right, C-Up, C-Right,
C-Left, C-Right.

CPU control
Hold L and press A, A, A, A, A, C-Up, C-Down, C-Left, C-Left,
B, A, C-Right.