Sub zero thought back he had a student before her name was frost she was a hard worker and did whatever sub-zero asked of her without any of the sexual favors, because he had a little more repect for her then that. Frost couldn't handle the power and the one nice kind girl had her heart frozen and she became cold to the world even tried to kill him. That was the last person he trained but tanja was family and she had a natural talent for this just like he had. "your pretty good at this huh," He turned around "I'll train you then but it has to be at night so no one knows about it so you can't tell anyone, especially Johnny cage."