Fin Fennec teaches locked room studies at BLUE and is basically the world's go-to expert on the subject. She's got one of those rare S-rank detective licenses—there aren't many people walking around with one of those.
Her "Phoenix touch" ability is what makes her genuinely legendary in her field. So far she's uncovered 5,000 hidden rooms, caught 3,000 illegal constructions, and identified 10,000 physics-based tricks. Yeah, the numbers are kind of absurd, but that's what her track record shows.
Content compiled by AnimeList.moe from publicly available sources.
