There are multiple AI only versions of characters, Sasuke is one. Which I find really confusing.

On the roof of Konoha Hospital you fight Chuunin Exam Sasuke. This version of Sasuke doesn't appear anywhere else in the game as far as I can tell. It seems like a waste? It'd make more sense to me if that was two star Sasuke instead of Curse Seal, make Curse Seal 3*, and then make Sasuke his own character.