Character from Umamusume.
Nicknamed the "Grey Monster", Oguri Cap is a talented racer with very modest origins, has a strong Heartbeat and a ravenous appetite. The actual horse is named after his sire: Dancing Cap. Member of Team Sirius (Retired)
Horse girl. She has long silver hair with a darker spot on the top of her skull (the non-eponymous but appopriately nicknamed "cap"), her ahoge being of the same color; as well as blue eyes. She wears a peculiar hairband with a diamond design as well as a ring accessory around her right ear.
Oguri has her own spin-off manga titled Umamusume: Cinderella Gray.
As noted, her most salient trait is her appetite. This is better detailed in the "Oguri the Gray Munchster" pool page.