Yup, I was thinking along the lines of Kingdom Hearts. The characters all converge in Traverse Town because their worlds have been erased. Of course, this rp would have our characters maybe not remembering where they came from? At least, that's the general plot I'll be using for my character. 

[@CloseEnough] Sorry for not speaking out sooner. I was actually waiting for the others to post their characters so that I'll have an idea how to go about it.