A teasing and charming HOLLOW BRAIN. HOLLOW BRAINS appear as a shadow of a body, the only thing being seen is their eyes, mouth, hair, and the form of their body. Hikoro appears to have short and choppy dark hair, and wears a collared shirt with grey overall shorts. He has a slim body, and is rather lean, as he has no muscle to him whatsoever ever. It doesn’t mean he is weak, though. Hikoro is a rather popular individual amongst the post-apocalyptic universe that is not Earth.