Solazar from an FNF mod known as "FNF: Entity"
Use: Solazar
Tags: male, humanoid, blue fire, fire head, fire body, blue body, moutless, no mouth, white eyes, blank eyes, glasses, no pupils, White collared shirt, yellow necktie, black suit jacket, formal,
Optional:
"Ponytail, hair back" - (alt hairstyle featured in "stratostellar", remove "glasses, black suit jacket, formal" to obtain the full apperance.)
Issues: he had an angry expression in nearly every image used for this so it will tend to do that often.
Strength: 1-0.8, can work good at 1, but I suggest playing around with it a bit as lowering it could tend to provide some "nicer" results.
He was suggested to me. Not sure if the "fire" related tags will cause any weirdness as it didn't at all in my tests, but you could remove all of them aside from maybe "fire head" and it should still work out.