Colette is a character introduced during the City of Magic arc of the anime. She is a girl who aims to gain admission to the magic academy located in the magical city of Arsbell. Her visual design features green hair and green eyes, and she wears the attire of an adventurer.

In terms of personality, Colette is depicted as a very delicate and timid individual who struggles with self-confidence. She is the type of person who becomes nervous easily and can freeze up, finding it difficult to move or act when under pressure due to a fear of failure. Despite this anxious disposition, she is a dedicated student of magic, specifically studying green magic, which pertains to the atmosphere and weather. Her talents begin to show themselves in moments of practice; for instance, during flight training, she is able to float in the air almost immediately, hinting at a natural aptitude that contrasts with her usual hesitation.

Colette is part of a trio of childhood friends, and her story is closely tied to the protagonist, Arel. Her role in the narrative focuses on her personal struggle to overcome her insecurities. It is through Arel's advice and influence that she begins to find the confidence she lacks. Her development is marked by this gradual change: she transitions from being someone paralyzed by the fear of making mistakes to a girl who can believe in herself, ultimately achieving her goal of enrolling in the magic academy. Her notable ability is the use of green magic, a specialized school of magic that allows her to manipulate atmospheric and weather-related phenomena.