Meat

(intro)

History
Meat was originally a glitch in an early version of Mortal Kombat 4, where one would end up playing as a bloody corpse. Eventually later on it was decided that he would be an official secret character for the game, so he wasn't removed. He could be accessed by playing as everyone in a certain mode, then going to arcade mode and choosing anyone. Of course, since he was only a glitch originally, he only serves as a skin for the chosen character. Eventually he was made into an official character with the release of Mortal Kombat: Armaggedon.

Trivia

 * Meat was originally just a skin used for several of the game's fatalities, and it's own completely different model.
 * Meat would have four arms if Goro was picked as a character.