Leo (リーオ, Rĩo also known as Reo) is Eliot Nightray's servant and friend.
Appearance
Leo has long dark messy hair and round glasses that covers his eyes (we can't see his eyes). He wears Latowidge uniform and at Sablier, he wore black coat and black suit.
Personality
He is a student at Latowidge and serves Eliot. He has a calm and collected demeanor and is hardly rattled by anything and is more mature than Eliot. Leo is very observant and discovered Oz's identity as an intruder. Despite being Eliot's servant, he doesn't always take his side and will make him apologize if needs be. Leo carries a gun and is apparently hopeless with it (and swords, according to Eliot).
History
He is first seen in episode 17, when Oz and co. sneaked into Latowidge and told Eliot about it. He is later seen in the library reading a book behing a bookshelf and telling Eliot off for being "rude" and spoling ending of Oz's favourite character in Holy Knight, namely Edger. When Ada and Oz were kidnapped, he and Eliot came to save them. They were then seen in Sablier. They took Oz and co. to the Nightray orphanage in Sablier. When Oz and co. went in to the hole, he and Eliot came to find them in which they met them in the center of the hole.
Abilities and Powers
Guns and swords: he is completely hopeless with guns and swords although he carries them around.
Musical Instrument: he can play the piano as seen when he is playing "Lacie" with Eliot.