Where should I send application for a ToriAgent? I'm asking because I can't find any sensible information about this. Or should I just message one of them?

I'm just curious.

http://forum.toribash.com/showthread.php?t=418066

to be sent to your favourite member of the respective staff group.

Still didn't get clear answer ._.

Hmm, okay. But who are all these people with "%" next to their in-game nick? I heard only TAs have these.

Trial game masters and Old Schoolers I believe.

Just Trial GMs.

Trial GMs have half op, and thus have %

Old School players have +, with no in-game power.