Characters...
	Human Smoke...

Below are some of the unlockable characters in Ultimate Mortal Kombat 3, as well as details on how to get them:

Ermac
Complete Arcade Mode on Warrior difficulty or higher. Pick the third treasure, with the yin and yang icon.

Jade
Complete Arcade Mode on Warrior difficulty or higher. Choose the fourth treasure, with the 3 symbol.

Tap and hold Smoke at the character selection screen. Robotic Smoke will be replaced by Human Smoke after a few seconds.