[RetroVortex]

I think Daishi's idea is great.
Definitely a lot of depth and lore to it.

I myself the other day was thinking about a story about body snatchers.
Well... Psychics who could posses other people, and the main two characters were two teens who develop these abilities (by switching with each other at first! XD), and after some goofy hijinks get recruited into a government agency to try to hunt down dangerous "body snatchers".

Their powers would have grown with each others presence, which would have been their main advantage over most other psychics. (So they kinda get stronger over time anyway, but because they are so closely connected they can kind of synchronise that psychic energy with each other as well)

One of their first targets is to track a known "body snatcher" who repeatedly "escapes" custody.
(Intentionally most of the time since he has a tendency to lead the agency to bigger leads)
He is at first hard to deal with because he has a secondary ability ontop of just mind control/possession, in a certain range he can remotely control certain body parts of others.
It's a limited ability and quite tiring of him, so even though potentially dangerous (with enough focus he could stop someone's heart), he normally only uses it to make his escape or gain a cheap advantage.

He's no good guy, but he's no monster. Just a bit of a cowardly rat with a big ego, and big greed.
(Who occasionally has a good idea. Well... Good for him anyway! XD)

So he would be a sort of re-appearing character. Eventually a nuisance, but sometimes oddly helpful.

...
Yeah that's all I got. I was just mulling a little over it at work.
Don't know if I'd want to take that idea any further, but it's decent enough to log for future reference.