Unlock Single Set of Wrestlers
     At  the  Title  screen,  press  R,  L,  C-Right,  C-Left, C-Left,
C-Right,  L,  R,  Z.  Then,  At  the Character Selection screen, press
C-Left, C-Right, L, R, C-Left, C-Right, L, R, Z.

Unlock All Wrestlers
     At  the  Title screen, press C-Right(4x), C-Left(4x), R, R, R, R,
L, L, L, L, Z.

More Rings
     At  the  Title  screen,  press  C-Left, L, C-Right, R, C-Left, L,
C-Right, R, Z.

Ring Select
     At  the  Options screen, press C-Right, R, C-Right, R, Z. Press Z
to display the next ring.

Swelling Heads
     At the Options screen, press C-Left(7x), L, Z.

Big Heads
     At the Options screen, press C-Right(7x), R, Z.

Giant Heads
     At  the  Options  screen,  press  C-Right(4x),  C-Left,  C-Right,
C-Left, C-Right, Z.

Big Heads, Hands, Feet
     At the Title screen, press R(7x), C-Right, z.

Big Hands
     At the Mode Selection screen, press L(7x), C-Left(17x).