Mireille Caquet is a student in Ms. Mendeleiev's class at Collège Françoise Dupont, and she is the KIDZ+ weather forecaster after winning a competition. She is very popular, getting a lot more votes than the other final contestant, Aurore Beauréal.
- In "Dark Cupid", Mireille appears crying over Adrien's poster when Chloé is showing it off, suggesting that she is also a fan of him.
- In "Pixelator", the titular character traps Mireille in a photo with Théo Barbot.
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