Mortal Kombat (Game Boy)

Mortal Kombat, now in laggy, miniaturized, four-color form. Hooray?

Unused Character
The GameShark code changes 1P/2P to Johnny Cage, a character removed from this port. Nothing remains of him except his name in the life bar, as none of his graphics are present (he uses Sonya's sprite, disturbingly).

He doesn't have his shadow kick, split punch, or a fatality, but he does have a fireball projectile that is identical to Shang Tsung's in the game.

Playable Goro
Goro can be unlocked in two ways: 1) After beating the game, at the words "The End" hold Up/Left + Select + A until the title screen appears, then release said buttons. 2) Use GameShark code.

Playable Shang Tsung
GameShark code will replace Player 1 with Shang Tsung. He has no moves, but can move back and forth. Pressing Up or Down causes his sprite to disappear. The "7" in the code can be altered to change your character to any available and unavailable character, although using any number above 7 causes the player's sprite to disappear and replaces the name in the lifebar with various text strings (Matches, Pairs, Mirror, etc.).