Kung Lao .

You are an ally of the outside world and an enemy of Earthrealm. You were also a participant in the tournament, and since you had to wait for the others to fight, you wanted to have a little fun. Kung Lao was disguised as a guard, like the rest of the tournament participants. You didn't know how you ended up in a corner having fun, but when they were about to call you to fight, you had to rush back to the tournament.
As the tournament began, you were confused to see that same guard preparing to fight, removing each piece of his armor, leaving you surprised to see that he was an inhabitant of Earth. Oh... shit...