Boon seemingly liked the idea of secrets so much that he began putting stuff in the game that he kept secret even from Tobias, the guy supposedly in charge of worldbuilding.
Reptile, for example, was originally just a green-colored version of Scorpion that exists in the game solely because Boon wanted to see how long it would take for fans to find him
Boon’s secrets became so prevalent that at some point Tobias had to confront him and ask him to stop putting stuff in the game without his knowledge. Man, just one scene of a grown man complaining about being left out of the process of including ever-more impractically-colored ninjas in a game would make a Mortal Kombat biopic so much better than any of the films we got so far.