Hey, look, it's Poltergeist! Sorry about not including her earlier, but I hadn't found a way to fit her in. But here she is. Now every character for this comic has been seen, and Supertrans. And it's a good thing, considering the villain is now upon them, so there's no need to try to introduce another character in the midst of a battle.
This is part of the 2014 Halloween Cameo Caper.