Alright, good sign up. Just two things I'd like to mention though.
Based on Halt's powers, he's actually an Elementalist/Monk. Using magic in any form for hand-to-hand combat is basically what a Monk does. I'll just put him as an Elementalist/Monk.
A Fire Gaian wouldn't nessesarily need to get a Red Gem lodged in their throat to breathe fire, but that would probably make the fire breath stronger since the gem would be closer to where the actaul fire is coming from.
Overall though, Halt is good, and thus is Accepted.