I can finally post these drawings I've kept a little hidden, since I finally got to reveal some stuff in a game
Cosmo is another of my D&D characters, they're a whimsical amorphous fey being who thinks themselves a villanous mastermind, an accident gave most of their power to a warlock so now they can only use a small portion while theyr try to recover. In game they like reading minds and use transformations to psychologically affect people they're talking to