Tobi Otogiri Height: 167cm, Weight: 54kg. Birthday: May 22nd. Likely blood type B. Male. He wears easy-to-move-in clothing, entirely in black. He has beige mash-cut hair that slightly covers his eyes. He is poor at self-expression and is often seen as blunt, but he shows his true nature through his actions. He is clumsy but kind. At age 5, he was separated from his older brother, Gata Otogiri, while being chased by a mysterious organization, and was entrusted with the backpack-shaped nonhuman "Baku." Since meeting and taking Ryuko under his protection at age 14, he has continued to search for his brother alongside Baku and Ryuko.

A nonhuman (Male?). Total length: 120cm (backpack form) / 250cm (Full Jaw form). Travels with Tobi (or rather, is carried by him). Usually carried as a black, circular backpack. A reliable partner who uses sharp teeth and a long tongue extending from his zipper-like mouth to assist in combat and defense. He is talkative and caring, serving as the straight man who speaks up in Tobi's stead. He has no memories from before meeting Tobi. Tone: "Hey, Tobiii! You hungry again!? Keh-keh-keh. You just ate a butter roll!" "Gyahaha! Tobiii! This guy says he's hungry!"

Appears to be about 3 years old (actual age unknown). A nonhuman in the form of a young girl. She can shift between human and dragon forms. She has golden eyes and white hair that reaches her knees. Her distinctive feature is a broken right horn. In her dragon state, she is a headless white Eastern dragon. She is innocent, cheerful, and full of curiosity.