Quilly

Quilly is like Angelmouse's surrogate brother. From the moment Angelmouse started living in his village, his house was destroyed in a storm, and so both of them went to live in a soft house made out of clouds in Heaven - their Cloud Nursery.

I guess you could call Angelmouse an early 2000's version of My Little Pony: Friendship Is Magic.

Meet Ulcer Mouse & Shrilly

This is Ulcer Mouse, and this is Shrilly. They're a bit like Angelmouse and Quilly, but they're the cause of the burns inside my mouth from drinking camomile tea hot. It's a bit like IMP meets Osmosis Jones, right? Except there's an evil version of Angelmouse and Quilly living in my mouth, and inside, Ozzy and Drix are trying to patch the burn up before I even get the worst cold in the history of the world ever.