Heh. I have mentioned what/who it is in a couple of threads, most recently the Cat Avatar one I believe, but it is certainly somewhat obscure. I’ll give a hint if you don’t want to look up other threads: the eyebrows are actual flame!
My favorite identified avatars are of course, @Johnny_Bravo, although it could be some weird triangle torso alien from Planet HairGel9.
My next semi-obscure identification would be @silenus, with their OotS “Thing in Darkness”.
My favorite mis-identified avatar is @Northern_Piper, although I belong to the mutant hummingbird/mosquito hybrid faction.