I have no idea who would win. I know only a few basic facts about He-man, and just about nothing about Mortal Kombat in general. (I have no life, lol.)

But if I were to make as educated a guess as I can, it depends on if it is a fair fight or if He - man's tiger can help him out. That could make a difference.

That's all I can give here. Sorry. From now on, I should really only stick with what I know, yeah?

A fight like this, without any context, just isn't that interesting to speculate about. For a start, what are their motivations for fighting? That'll make a difference to their tactics. (Like the saying goes, the gazelle runs faster than the lion because it's running for its life and the lion is merely running for its dinner!)