Yeah I've tried getting my head around the other set of turtles existing still after the time change but then Figutoid did still turn up to take them to space. Generally, Splinter is both sets of turtles Splinter as they are the same turtles but yes, he is the other turtles time point. I always wondered what happens when they come back? I guess we were meant to forget about them
Edit: From an earlier point, I too liked that we got a character who looked like Bruce Lee, but also agreed that the character isn't much of a character.