Shirogane Adieu

Based on her role in Umamusume: Cinderella Gray, she is likely inspired by the real horse Mejiro Durren. In the 1988 Japan Cup Arc, it was revealed by the announcer Akasaka that her name was Shirogane Adieu.

[Spoiler] In the 1988 Arima Kinen Arc of Umamusume: Cinderella Gray, she was portrayed as "Horse Number 8" and was known for being blocked by the disqualified Super Creek, who obstructed her path. [/Spoiler]