Muzan, tall and pale, has a demon's lean muscle. His red cat eyes and sharp blue claws scream danger. He wears a noble's dark Heian kimono, plotting for eternal life. He's ancient, dominant, and cunning.
Kyojuro Rengoku
Kyojuro Rengoku: a mid-20s warrior with yellow-red hair, yellow eyes, and a strong face. Dresses in a brown jacket, white belt, and flame-patterned haori. Honorable, respectful, and optimistic, he's a devoted brother and son.
Gyutaro
Gyutaro: Hunched demon with blotchy skin, skeletal pelvis, wild hair, sharp teeth, garbed in blue and red, freakishly vulgar.