Titular Rider of [[Kamen Rider OOO (series)|]], twenty-first show of the Kamen Rider series and twelfth of the Heisei generation.

[[Hino Eiji]] is a world-traveling vagrant with no long-term job, whose recent stint as a museum guard drags him into a tournament between the Greeed, five creatures competing for the title of "Multi King" after an 800-year-slumber. Finding himself an unwitting pawn of the bird-type Greeed Ankh, Eiji fights the Yummy, monsters materialized by Greeed from human desires and which serve as their pawns, as Kamen Rider OOO.
Like [[Kamen Rider Double|his immediate predecessor]], OOO takes on various Combos by placing three Core Medals ([[O Medal]]s taken from the Greeed) at once on his OOO Driver, his default Combo being the [[TaToBa (OOO Combo)|TaToBa (Hawk/Tiger/Grasshopper) Combo]].
タトバコンボ