Horse Orphnoch

The Horse Orphnoch appeared in 2003 TV series called Kamen Rider 555. His real name is Yuji Kiba (木場 勇治 Kiba Yūji) who was one of the primary characters that appeared in Kamen Rider 555. He mostly served as one of the antagonists and occasional protagonists in the series. He was a young man who became the Horse Orphnoch (ホースオルフェノク Hōsu Orufenoku) after dying as a result of a car crash, although he lived in a comatose state for two years. He has assumed a total of three Rider forms: two in the main series (Faiz and Kaixa) and one in the film Paradise Lost (Orga).

Originally human, Kiba became a Natural Orphnoch after dying within two years when he was in a coma as a result of horrific car crash which killed his parents. Once revived, Kiba was astonished by the horrific changes from his parents' death to overhearing that his uncle forsaken him and sold his family's company. Though it got worse when Kiba learns that his girlfriend Chie Morishita left him for his cousin named Kazuaki Kiba, he lost control when he confronts the new boyfriend as he assumes his Orphnoch form to kill him in a maddened rage before realizing what he had done and attempts suicide, finding himself in a Smart Brain owned mansion and meeting Smart Lady, explaining his current status. When he is called by Chie later, he is heartbroken when she names him the culprit in Kazuaki's murder, outrunning the police before he murders Chie out of scorn. After finding Yuka, Kiba meets with Smart Brain's temporary CEO Eiichi Toda, who reveals more information of the Orphnoch and Smart Brain's goal. After hearing the genocidal intent, Kiba quickly comes to deplore the organization's tactics and resolved to become an Orphnoch who will protect humans and fight Smart Brain. However, Kiba becomes a rival of Faiz, fighting him every time they encountered one another until they learned each others' true identity and intent.

Unfortunately, Kusaka uses the Faiz Gear to trick Kiba to think that Takumi is a bad guy. He also lies to Takumi that Kiba is the one who stole the Faiz Gear, making both Kiba and Takumi become rivals once again. However, after knowing that Takumi is the Wolf Orphnoch, Kiba starts to reconcile with Takumi. Unfortunately, Takumi loses his confidence and gives the Faiz Gear to Kiba for a short time. Kiba becomes Faiz for some time until he saves Takumi from his near death from Kyoji Murakami. He later gives back the Faiz Gear to Takumi.

After he believed Yuka to have been killed by the police, Kiba turns against his ideals and eventually replaces Murakami as the chairman of Smart Brain. He later kills Kusaka and claims his Kaixa Driver. Kiba eventually fought Takumi, and Kiba was defeated. However, Takumi didn't finish him, since Kiba was still a human. Kiba then revived his faith in humanity again and helps Takumi and Mihara fight the Arch Orphnoch. In the end, Kiba was mortally wounded by the Arch Orphnoch, grabbing the monster to allow Faiz to kill them both, though only the Arch Orphnoch barely survived.

In the film, Kiba was the primary user of the Orga Gear. In the events of the film, Yuji Kiba is brainwashed by the Smart Brain corporation after they have won the Orphnoch Revolution and is chosen to be the user of the Orga Gear, allowing him to transform into Kamen Rider Orga. The Orga gear was recorded as the fifth Rider Gear created by Smart Brain, after the Faiz and Kaixa Gears were stolen by the humans and the Riotrooper gear had undergone mass-production. Created alongside the Psyga Gear, the Orga Gear is regarded as a "perfect" gear, and therefore it can only be worn by Orphnochs. Kamen Rider Orga has a more ornate appearance than any of the previous Gears, the Rider form having robes made of Soul Foam for a majestic appearance. Orga is armed with the Orga Stlanzer sword which he uses in the Orga Slash Extreme Charge. He is sent to fight Kamen Rider Faiz after Psyga is defeated. Faiz is finally able to defeat Kamen Rider Orga with Blaster Forms Rider Kick, but does not kill him. Instead, Orga dies while trying to hold off the Elasmotherium Orphnoch so Faiz can destroy it, after Takumi finally gets through to him and reminds him of what Smart Brain really stands for and what his true values are.

Kiba appears as the Horse Orphnoch in a flashback fighting Kaixa while Faiz fought the Arch Orphnoch in a Takimi's flashback in ''Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai''. Kusaka died after being defeated by the Horse Orphnoch.

Powers and Abilities
He can take on the form of the Horse Orphnoch, carrying a sword named simply "Horse Sword" (ホースソード Hōsu Sōdo) and able to assume a centaur-like Dash Form (疾走態 Shissō-tai). He is an extremely powerful Orphnoch, at least as strong as members of the Lucky Clover group, if not more so. In the Paradise Lost ending, Kiba was deceived into using the Orga Gear to fight Faiz, but aided him and died from injuries sustained by the Elasmotherium Orphnoch. However, he was able to wound it bad enough for Faiz to finish it off.

The movie version of Horse Orphnoch's design called Violent Emotion (激情態 Gekijōtai) is dramatically different than that of the TV series. It now sports a more helmet-like head design as the horse snout is pushed upward to allow a more insect/human-like face. The singular horn's enlarged and moved toward the top of its head while its white mane extends much fuller all the way down to the base of its neck/back. Gone is the hoof design on its chest and replaced by a larger and more powerful chest armor. During the last episode of the TV series, Horse Orphnoch evolved into the film version during his final battle with Faiz Blaster Form, but reverted back to his regular TV version prior to his demise.