I've got a feeling you'll develop him plenty.
As discussed you'll be joining the group with miniphil, Doll, and Ellxeeva. You can see their character descriptions here in the sign in thread.
Currently they're talking together in a convenience store in town. You could just look through the last few pages of the RP for their lasts posts, and jump in off of that.
Hopefully that's enough info to get you in. If you feel unsure than shoot me a PM and I'll help however I can.