Diabolos, FF series - diabolos is a large, winged, demon-like entity, primarily red and black in color. as diabolos hollow, his body becomes bulkier and armored and grows a second pair of wings. his body gives off a bright orange glow. the unique green and red markings found on scathath can be seen at the base of his wings and underneath his shoulder-like armor.

Demon king - a demon king riding the abyss dragon in haven. he looks like a person with red eyes and white hair - a majestic and menacing demon king, adorned in dark armor, riding on the back of a ferocious abyss dragon

godrick in elden ring, garden golden robed, demigod with dozens of arms and a dragon fixation, white hair, king crown, twinned armor, old skin, evil man, green blue cape, multiple arm like a spider