thewake might be a good place to look for both Turbo and Randy. They accept all sorts of unusual canonpoints so Turbo's will most likely be fine.

As for powers, there is temporary power loss but your characters can easily regain their powers through learning to use the new power given to your character called Bending. It's basically the ability to manipulate and bend reality so your character just learns to bend back their powers. You usually can get back one power per 2-4 weeks in game.

We also have a Danny Phantom in game and I'm thinking of apping Jake Long so if you're into that tumblr ultimate trio thing, that's totally a possibility for CR.

Also 3step_paradise is another possibility for all your characters. It's AU friendly and there is no power nerfing at all. It's a laid back game where characters are transported by the gods of their world to participate in a game of sorts. Your character now lives in the city of Paradise and has to put up with he games and challenges of the gods while living in the city. We encourage exploration outside the city too as there is an entire world out there.

I'm on both games so if you have any question, feel free to ask.