FWIW, while not cheap, you can make a REALLY good Demon QC with:
New Hobgoblin face
Mephisto torso and arms and crotch piece
Black belt
Blue Batman cape
Moloid hands
Chun-Li wrist spikes
Moloid legs
Deadman booties
It’s not a cheap QC by any means, but, aside from not having pointy ears and horns, it’s a damn good QC.