Whenever Esther enters a Sonic world, she usually turns into a Mobian, but sometimes somehow something goes awry and she instead turns into a chao!
Not that she can't work with it though. After all, just look at the cute little face, surely nobody would suspect something that cute and tiny wouldn't be up to anything....

(Anyway, I've been on a big Sonic kick and been playing a bunch of the games. Just started Adventure 2, so I've been looking a lot at chaos.
I've got a bunch of Mobian Es WIPs that I should hopefully finish before this kick wears off and they are tossed into the void)