Brimstone is a rather unsavory character. Slightly crazy, obsessed with omelets, vain, fond of blending into the shadows, and an incorrigible flirt, he has been ousted from several packs for his outrageous behavior. The marks on his face are the result of an encounter with some strange mushrooms, presumably during one of his escapes although he is somewhat vague when asked about the incident. Apparently he's reluctant to discuss anything that leads to permanent re-coloration of his fur. He doesn't belong to a pack at the moment, and has no intention of joining Jewel and Creamy in theirs.

Brimstone occasionally pays homage to Corvus, Kukulkan and Cygnus, though his true god is himself.