A photography club friend of Teddy's. He always feels very uneasy around Ambrose and is quick to escape any place Ambrose enters.
One of Walter's friends and the lead guitarist and vocals of their garage band. Walter usually drives to school with him in the mornings. He's pretty laid back most of the time.
A fellow bookworm who hangs around Carly's group. She loves mythology and is a bit awkward.
A quiet guy that doesn't really have a definite place in the high school social ladder. He gets along okay with most people.
The back-up guitarist of Walter's band. He, like Walter, is the sort of person that everybody in the school knows. He sticks with both Walter's main group of friends along with some of Carly's.
A close friend of Carly's. They grew up together and both became a bit boycrazy at some point. While Carly reads lots of romance, Noemi's much more proactive with flirting. She especially enjoys messing with new kids.
Walter's band friend. They usually practice at his house since it's rather large. He's the drummer. True to the rock band drummer stereotype, he can be pretty weird and the tiniest bit crazy and still exude charisma.
The school's art teacher. In actuality, she's an angel whose job is to keep an eye on Ambrose. However, it seems she does not know the details of his mission.
Head of the Grand Council of the Netherworld
A neutral being in charge of the Grand Council, he is neither demon nor angel. He is the one who sent Ambrose on his mission after suddenly accusing him of being an impostor in the Netherworld.
Guiding Forces of the Netherworld Officer
A rather brutal demon in charge of one of the Guiding Forces squads. Being a firm supporter of order and uniformity, he quite dislikes Ambrose, a rather unconventional demon.