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An umamusume character. An energetic athlete who represents the new umamusume mode "U.A.F." along side with Tsurugi Ryoka.
She is reportedly based on Osumi Eleven, a racehorse who achieved Open class on dirt but later turned to Dressage. Osumi Eleven's dam, Rosita, was both long-lived and foaled many foals, of which, Osumi Eleven was the last born. "Sonon Elfie" is based on the name of two of his siblings: Sister Sono and Elfin. Osumi Eleven's sire was Kurofune, from which he got his grey coat (and consequently, why Sonon Elfie's hair is grey).
With that in mind, Sonon Elfie has long grey hair in a side ponytail on the right side and her right sidelock is braided. She has yellow eyes and wears a pink headband with a white "XI" adorning it (her main link to Osumi Eleven) and ear covers of different colors. The left one is yellow, the right one is green. She wears crossed bandaids on her forehead.
Voiced by Koshimizu Ami.
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