Skelly, Sakura, and Burton - though the latter two are shape-shifting monsters who came from Zhivago's dimensional 'possum-pouch and are sort of like Pinky and The Brain (Sakura being the brain, trying to do evil, but Burton gets in the way with his goofy self - Skelly couldn't care less and wish they'd just leave him alone).

I may draw up my other themed characters later haha.