Girl in Red by idX is a Harry Potter Crossover Fanfic series featuring Rose Peta-Lorrum, a Dungeons and Dragons Original Character who ends up in the Rowling Plane on accident and can't go home. The series is currently in progress, with the first five stories: Harry Potter and the Girl in Red, Sally-Anne Perks and the Scarlet Sociopath, Luna Lovegood and the Maniac in Maroon, Neville Longbottom and the Cherry Champion, and Hermione Granger and the Amber Abandonment complete. The sixth, Draco Malfoy and the Villain in Vermilion, is currently in progress.
- Adaptational Badass: Hermione, armed with a stat-boosting hair clip, can easily analyse and counter spells on the spot, faster than she can move.
- Alliterative Title: Every story after the first: Scarlet Sociopath, Maniac in Maroon, Cherry Champion, Amber Abandonment, and Villain in Vermilion.
- Cerebus Syndrome: In the words of the author himself, the series starts out light and cracky, but gets darker the farther in you get. After Rose apparently dies, the story gets significantly darker as the characters try to cope with it.
- Late-Arrival Spoiler: "Hermione Granger and the Amber Abandonment" and its description.