katoh, katou (hyaena), greed (fma), ling yao, fullmetal alchemist, homunculus, 3boys, bald, black skin, black theme, blue eyes, blue theme, collarbone, colored skin, frown, grin, hand on own hip, long hair, long sleeves, looking at viewer, looking back, low ponytail, male focus, multiple boys, multiple persona, open mouth, ponytail, red eyes, red theme, sharp teeth, shirt, short hair, simple background, sketch, skin tight, sleeveless, smile, spiked hair, tattoo, teeth, topless male, upper body, white eyes, yellow background