Rabi-en-Rose (ラ・ビ・アン・ローズ Ra Bi An Rōzu?), aka Master Usada (うさだ名人?) is a character from the Di Gi Charat franchise, and also one of Galaxy Angel Rune's cameos. She held the title of Meijin when she competed against Lily C. Sherbet in the 236th National Japanese Chess Championship. She was defeated, and Lily won the Legendary Tofu, a necessary ingredient for the Legendary Hot Pot.
Rabi-en-Rose is seen wearing her bunnygirl outfit: a pink, white and red dress with large white rabbit ears and a large round cotton tail.