Fluorite

Fluorite, of Mohs Gang fame, is a Moh-c created by noted Dountaineer Cashew for his fanwork Danger Mountain Coffee. He is a cheerful, easygoing college student, who moonlights as a club DJ under the name DJ Fluorspar. He also struggles with Hodgkin's lymphoma, and in the subsequent fanwork Danger Mountain Heroes, ends up dying because of it. He spends the runtime of DM3 as a resurrected skeleton with particularly brittle bones as an unintentional consequence of Feldspar's necromancy powers. In all universes, he is a good friend of Feldspar's, and a force of positivity in the world.