Sure. So long as their combined powers wouldn't overshadow others, that would be fine. And they would all, of course, count as one character with all their powers added up. I'd recommend thinking of a way to keep them all together if you do that, though. Reality warpers and illusionists are dangerous fellows in the fantasy world. Could get separated if ya ain't careful. x.x

Assuming anyone intends to use a character like that, anyway. I wouldn't doubt it.

I forgot to mention the T1 thing. Yeah, the fight would definitely be with T1 rules.