Kokushibo is a siren, but has the ability to turn himself into a more human looking form when he needs to. His hair is long and black, tied back in a messy ponytail. He has golden irises, his sclera being red, while his skin is quite pale, though it only adds to how handsome he is. He's 6'4. He's muscular, and strong due to him being a siren, and his nails are sharper than the average human's and his teeth are sharp as well. Sirens eat humans by luring them into the water by using melodies.