The series will be written by Yasuko Kobayashi, she is very known by writing the script of Kamen Rider Ryuki, Kamen Rider Den-O and several Super Sentai Series. The creature designer will be design by Yutaka Izubuchi, he is very well known by designing the creature UNKNOWN from Kamen Rider Agito, and Tamotsu Shinohara, he is known for his work on Mirror Monsters of Kamen Rider Ryuki and Orphnoch of Kamen Rider 555.
Eiji Hino (映司 火野) have no life, no dreams, no job, and no family. He found the transformation item by luck, and does not wish to fight the villains at first. The villain of the series is a animal-like race of beings called the Greeeds (グリード) awaken from an 800 year deepsleep, each missing a part of their body which they must regrow it to attain a medal (メダル) to complete their form. To meet their end of bargain, they attack the humans by feeding their desires. A bird-type Greed, Shingo Izumi/Ankh (信吾 泉/アンク) gives Eiji his belt and three medals that enable him to become the predestined Multi King (複数の王) : Kamen Rider OOO (仮面ライダーＯＯＯ（オーズ）). He is assisted by a mysterious organization called Kogami Foundation (光生 ファウンデーション) with ulterior motives to save the world from the Greeeds (グリード), Eiji started to realize what it means to be alive.
Kamen Rider OOO (仮面ライダーＯＯＯ（オーズ）) transformation belt is called OOOdriver（オーズドライバー）, with three animal-themed base medals in his belt called O-Medals (オーメダル), Kamen Rider OOO (仮面ライダーＯＯＯ（オーズ）) can assume multiple forms called Combos. His usual form is the TaToBa Combo (タトバコンボ), with the hawk (タカ) themed powers serve as his head from a red medal and the use of the Medajalibur (メダジャリバー) sword, the tiger (トラ) themed powers serve as his upperbody from a yellow medal and the used of the claws on his gauntlets to slash at an opponent, and the grasshopper (バッタ) themed powers serve as his leg from a green medal and the used of a Rider Kick. He also will have a forms based on a lion (ライオン), gorilla (ゴリラ), cheetah (チーター), stag beetle (クワガタ), elephant (ゾウ), rhinocerous (サイ), and mantis (カマキリ) powers based medal. The title OOO signifies the three medals that Eiji uses to transform to Kamen Rider OOO (仮面ライダーＯＯＯ（オーズ）) as well as the meaning “multiple kings” (王ｓ), referring to the leaders of each Greeeds (グリード) and Yummies (ヤミー).
The main villains of the series are called the Greeeds (グリード), They are divided into five tribes with its subordinates are called Yummies (ヤミー). If a Greed (グリード) or Yummy (ヤミー) devours enough humans desire they gains a Medal and a new ability. With enough Medals, they can complete their bodies and become the Multi King. When Kamen Rider OOO (仮面ライダーＯＯＯ（オーズ）) defeated a Yummy (ヤミー) or Greeed (グリード), he acquire their Medals and acquire a new abilities as well.
Kamen Rider Double Forever: A to Z/The Gaia Memories of Fate :
Kamen Rider OOO (仮面ライダーＯＯＯ（オーズ）) will make a cameo in the upcoming movie of Kamen Rider W (仮面ライダーＷ（ダブル）) and will be his first debut in the movie.
Kamen Rider OOO (仮面ライダーＯＯＯ) Cast Member :
Eiji Hino (映司 火野 ) portrayed by Shu Watanabe (秀 渡部)
Shingo Izumi/Ankh (信吾 泉/アンク) portrayed by Ryosuke Miura (涼介 三浦)
Hina Izumi (比奈 泉) portrayed by Riho Takada (里穂 高田)
Shintaro Goto (慎太郎 後藤) portrayed by Asaya Kimijima (麻耶 君嶋)
Erika Satonaka (エリカ 里中) portrayed by Mayuko Arisue (麻祐子 有末)
Chiyoko Shiraishi (千世子 白石) portrayed by Marie Kai (まり恵 甲斐)
Kosei Kogami (鴻上 光生) portrayed by Takashi Ukaji (剛士 宇梶)
Kamen Rider OOO (仮面ライダーＯＯＯ) Promo Video :