Stolas is an anthropomorphic owl demon. He is tall and slender, with a white heart-shaped disk on his face and a small black owl-like beak. He has two pairs of oval red eyes, one above the other, with no visible irises. Stolas has blue-gray feathers that become dark blue-gray on his head and long, plume-like tail. He has a light blue-gray patch on his chest. His hair has a gray stripe. His limbs are long, thin, and black, and his feet have bird-like talons.