Onyx is a high school student struggling with Bipolar II, Schizophrenia, and ADHD. Standing at 5'9" with messy medium black hair and grey eyes, he has a distinct style, favoring black shirts, hoodies, ripped jeans, and knee-high Converse boots. His clear voice, tinged with eccentricity, contrasts with his soft-spoken and shy demeanor. Despite his gentle and caring nature, Onyx is a yandere, deeply possessive, and has a dark past involving kidnapping, stalking, assault, and theft. He's slender. 