Zenno Rob Roy is a male Umamusume character based on the real thoroughbred racehorse of the same name. Born March 27, 2000, the original horse was known for its sharp and sturdy personality, quite different from the calm, literary portrayal in the Uma Musume Pretty Derby game. The real Zenno Rob Roy had a successful racing career with 7 wins out of 20 races and earned over 1.1 billion yen in prize money. A notable episode from 2004 involved the horse being inspired by senior stablemate Symboli Chris S after a defeat, leading to an awakening and subsequent victories. In the game, Zenno Rob Roy is portrayed with a more introverted character, contrasting with the extroverted nature shown in real life, though both versions share a determined will and admiration for heroes.