Yuji Kiba

Yuji Kiba (木場 勇治, Kiba Yūji) was a 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 becomes the Horse Orphnoch 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 series (Faiz and Kaixa) and one in Paradise Lost (Orga).

Series
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 realising 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.

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. After acquiring the Kaixa Gear, Kiba eventually fought Takumi, who revived his faith in humanity. 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.

Paradise Lost
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 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.

Orga Gear
The Orga Gear is an advanced belt and cell phone developed by the Smart Brain corporation codenamed Emperor Belt of the Earth. When activated by the Mission Memory they activate the Orga armor. The Gear is usually stored inside Smart Brain headquarters along with the Psyga Gear while not in use. Aside from the construction differences, it shares a similar design to the Faiz and Kaixa Gears.
 * 555-ar-orgamissionmemory.jpg Mission Memory: A small metallic card key with the Orga symbol on it. When this device is inserted into certain parts of the Orga Gear, it turns them into powerful weaponry, also allowing the weapon to “EXCEED CHARGE” after pressing enter on the Orga Phone.
 * 555-ar-orgadriver.jpg-000B Orga Driver: An ornate belt that generates the photon streams for the Kamen Rider armor. If the belt is removed, the armor disappears. The belt straps of the Orga Gear were made of leather rather than metal; a leather holster was strapped onto its right side.
 * 555-ar-orgastlanzer.jpg-000S Orga Stlanzer: Dubbed The Sword of Hades. By plugging the Orga Mission Memory into the sword, then touching [ENTER] on the phone, the sword can EXCEED CHARGE and create a powerful attack. The attack itself, dubbed Orga Slash, has the weapon extend a photon blade which can either counterattack or capture a target before destroying it. Apparently, the Orga Stlanzer also has a gun mode and has been theorized that, in a way similar to the Delta Blaster, it can EXCEED CHARGE to perform Orga's Rider Kick, the Emperor Smash.
 * 555-ar-orgaphone.jpg-00P Orga Phone: This trans-generator, shaped like a phone, is the control unit of the Orga Gear and the primary storage place for the Orga Mission Memory. The Orga Phone's design was based on the Faiz Phone design. It is assumed to be capable of functioning as a normal phone as well. The Orga was programmed with high-pitched touch tones and a command voice similar to that of the Kaixa Phone.

Orga Command Codes
The Orga Gear has several command codes that can be punched into the Orga Phone to perform different functions. All of these codes require the Orga Phone and Orga Driver.
 * [0][0][0][ENTER]: After entering the code the Orga Phone will say “STANDING BY”. When the Orga Phone is inserted into Orga Driver slot, it will say “COMPLETE”. The wearer will then be transformed into Kamen Rider Orga providing they are a powerful Orphnoch; otherwise there will be an "ERROR" and the Orga Driver will violently eject from the wearer. Humans cannot wear this belt at all.
 * [1][0][3][ENTER]: When the Orga Phone is turned into Phone Blaster and this code is entered, it will say “SINGLE MODE”. The Blaster can fire a continuous beam of Photon Energy for about 3 seconds. It has 12 shots until it must be recharged.
 * [1][0][6][ENTER]: When the Orga Phone is turned into Phone Blaster and this code is entered, it will say “BURST MODE”. The Blaster can fire 3 round bursts of Photon Energy. It has 4 bursts until it must be recharged.
 * [2][7][9][ENTER]: If the Phone Blaster is empty and this code is entered, it will say “CHARGE” and will proceed to recharge the weapon. This takes about 5 seconds.
 * [End Call]: Pressing the "End Call" button will switch off the Orga Driver and cause the Sol Foam and Sol Metal to disappear.

Trivia

 * There are other names of Orga, the icon itself, Orga was also called:
 * Kamen Rider Omega
 * Kamen Rider Ω
 * Kamen Rider 000
 * Kamen Rider Oga
 * Kamen Rider Ohga
 * Kamen Rider Orgah


 * Kamen Rider Orga was once counted as one of Movie-Exclusive Riders, but that honor was removed due to his appearance in Kamen Rider Decade.