Reiko has short gray hair with a side bang that covers her left eye. She also has bags underneath her eyes and a small mouth with full lips.
Her Hero Costume consists of a white kimono with a fuzzy coat on the shoulders. She also wears a black scarf that completely obscures her mouth and neck and a dark, four-strapped waistband.
Reiko is quiet and emotionless.
Reiko has an odd body posture, where she bends her elbows upwards and lets her hands dangle, which somewhat resembles ancient depictions of zombies, ghosts, and other undead creatures, alluding to her quirk.
- Reiko's name contains the kanji for "willow" (柳?) and "child" (子?) and the katakana symbols of "rei" (レイ?) which probably stand for "spirit; soul" (霊?).
- Reiko likes Internet surfing.
- ↑ My Hero Academia Manga: Chapter 26.
- ↑ My Hero Academia Official Character Book Ultra Archive (p. 94).