Mejiro Dober is an umamusume from the prestigious Mejiro family. She exhibits a cool and reticent demeanor. Her sheltered upbringing contributes to difficulty interacting with men. Secretly, she pursues creative interests like drawing shoujo manga. Her appearance features dark purple hair adorned with teal accessories and a distinct racing outfit. She shares a living space with Taiki Shuttle and regards Mejiro Ryan in a paternal light.