This page is a collection of tropes for the students and staff from Cross Feed's Royal Knight Academy of the Light Novel Undefeated Bahamut Chronicle, excluding Lux Arcadia. Fans of only the anime and manga must beware of spoilers.
TriadA trio of childhood friends who are part of the academy's Knight Squadron.
- Childhood Friends: All three are this to each other, even when they are in separate years.
- The Gadfly: They enjoy teasing Lux about his harem problems and putting him in embarassing situations, such as making him dress like a girl (to be fair, it was to draw out a prowler in school, but they certainly had fun with it) or setting him up on a triple date with Celestia, Krulcifer and Philuffy.
- Those Two Girls: Only rarely are they seen without each other.
The eldest member of the Triad. Daughter of the Vice Commander of the Kingdom's army.
- Fighting Your Friend: In Volume 3, Shalice fights alongside Celestia against Lux and Philuffy.
- The Leader: Of the Triad.
- Only Sane Man: The most normal girl in the Triad.
- You Gotta Have Blue Hair: Has blue hair.
The mood maker of the Triad.
- Lethal Chef: Implied in episode 3. She tells Lux not to expect much from her cooking.
- Genki Girl: Sweet ray of sunshine, she is.
The youngest member of the Triad. Airi Arcadia's roommate.
The eldest daughter of Aingram Financial Conglomerate, Philuffy's older sister, and the principal of the Royal Knight Academy.
- The Gadfly: She really loves to tease Lux just to get a reaction.
- Hot Teacher: Have you seen her in a bikini? Even Airi is jealous of her proportions.
- Motherly Side Plait: While she loves to tease, the style fits her personality.
- My Greatest Failure: Failing to rescue Philuffy from the Empire's cruel experiments. She's been hunting through ruins for any hope of turning the Phillufy Abyss into a full blood human, or even try to figure out exactly what the Empire did.
- Rose-Haired Sweetie: Quirks aside, she is one of the nicest characters in the series. She's like a second mother to Lux and Airi.
- Shipper on Deck: Is fine with Lux being with her little sister, and Princess Atismata, and probably a few others.
- Trickster Mentor: Her "true lessons" aren't on the schedule.
- Yellow Eyes of Sneakiness: A surpisingly sympathetic example. Her eyes are golden, and she plays her cards close to her chest because she knows there are elements, even in the Astimata Kingdom, that seek to take Philuffy away for nefarious purposes. According to Alma, Relie is aware of the Kilzrake family, implying she knows her longtime business associate, Magialca, leads that mafia.
- You Gotta Have Blue Hair: Like Philuffy, her hair is naturally pink.
An instructor of the Academy.
- Boyish Short Hair: Subverted. Her hair is very short, but we dont see her partaking in any masculine activities.
- Cool Teacher: Is very popular with her students.
- Flat Character: All we know about her is that she is the only other teacher in the Royal Knights Academy, aside from Relie.
- Meganekko: The anime depicts her with glasses.
- Stern Teacher: Stern is a bit strong, but she is more serious about her job than, say, the headmistress.
- You Gotta Have Blue Hair: Green hair in the anime, at least.
- Work Hard, Play Hard: When she's at a party, she drinks beer by the bottle. The rest of the time, she's a very level-headed, mature, and reasonable adult.