I was wondering if having diffrent costumes for a char is done by having seperate meshes with the same skeletal animation or if the clothing were seprate objects. Can this even be done in Blender GE
I don’t understand, but I’ll explain a bit on how to change cloths…
Make a character is an underwear look or something… Then make cloth for thim that go over his body nicely, make a new object of the cloths… When animating, use the same bones for the cloths… It’s actually very simple 
If you need more just ask!
Hope this helps,
Linkxgl