Eiji Hino/Zi-O

In 2010, Eiji Hino (火野 映司) was Kamen Rider OOO (仮面ライダーＯＯＯ（オーズ）), until the creation of Another OOO erased the Rider's history.

Another OOO
Due to the alterations to the timeline, Eiji Hino is now a politician of the National Diet of Japan. He is taken hostage within the Dan Foundation's headquarters by Kuroto Dan, who becomes Another OOO by Time Jacker Uhr. He has a red-colored feather piece, as a nod to his Greeed ally Ankh in the original timeline. He later encounters Hina Izumi, an employee of the Foundation, after she is imprisoned as well for questioning King Kuroto Dan's authority.

Forms
After Eiji inserts three Core Medals into the OOO Driver, he scans them with the O Scanner, and then holds the O-Scanner up to his chest, he transforms into Kamen Rider OOO. Like Kamen Rider Double before him, OOO has multiple combinations of forms he can access referred to as Combos (コンボ).  Tatoba Combo "Taka, Tora, Batta: Ta-To-Ba! Tatoba, Ta-To-Ba!"

- Transformation announcement

Statistics: Ability Perimeters: Tatoba Combo (タトバコンボ), also known as the Multi Combo (複数コンボ), is the default combination of OOO accessed using the Taka, Tora, & Batta Core Medals.
 * Height: 194 cm.
 * Weight: 86 kg.
 * Punching power: 4.5 t.
 * Kicking power: 12 t.
 * Maximum jump height: 190 m.
 * Maximum running speed: 100 m. per 4.5 sec.

In this form, OOO is armed with the Tora Claw gauntlets, and can transform his legs into Batta Legs to reach enemies that are out of his reach, such as ones that can fly. This combo is also the most balanced in speed and power.

This Combo's Scanning Charge finisher is the Tatoba Kick (タトバキック), where after jumping high up through the Batta Legs, OOO descends with a drop kick through the three rings that are formed, which are in the primary colors of the Taka, Tora, and Batta Medals which surround him in auras depending on the Core Medals. When passing through the red ring representing the Taka Medal, he is surrounded in a red veil with wings, the yellow ring representing the Tora Medal gives an aura with claws, while the green ring representing the Batta Medal gives an aura with legs.

Tatoba Combo's ending theme is entitled "Regret nothing ~Tighten Up~".

Appearances: Zi-O Episode 10

Devices

 * OOO Driver: Transformation belt
 * O Scanner: A device that scans the medals
 * O Medals
 * Core Medals: Allow OOO to use Combos
 * Cell Medals: Uses for weapons and the Ridevendor

Weapons

 * Medajaribur: Personal weapon

Portrayal
Eiji Hino is portrayed by Shu Watanabe (渡部 秀).

Appearances

 * Icon-zi-o.png Kamen Rider Zi-O
 * Episode 9: Genm Master 2016
 * Episode 10: Hawk, Tiger, and Grasshopper 2010