Alternate heads and colors:
Enter wrestler edit mode. Highlight a wrestler body, then hold B and press Left or Right to change the head. Highlight the color palette, then hold Z and press Up or Down to select a new color.

Move preview:
Highlight a move in wrestler edit mode and press X to view your character executing the move against a training figure.

Alternate referee colors:
Hold A for approximately three seconds at the versus mode screen.

In-game reset:
Press R + L + A + B + C + X + Y + Z. Note: This may not be done during the ending sequence.