Height: 163 cm
Leo is a boy with dark messy hair and round glasses. He is a student at Lutwidge and serves Eliot. He has a calm and collected demeanor and is hardly rattled by anything. Leo is very observant and discovered Oz's identity as an intruder. Despite being Elliot's servant, he doesn't always take his side and will make him apologize if needed.
Also, Leo could hit Eliot if he's doing or saying something wrong to his eyes. He is rarely seen without Eliot. Leo carries a gun and is apparently hopeless with it and swords, according to Elliot.
Voiced by: Akeno Watanabe