Dark Shinji

1="A Rider from Mirror World...Ryuga."

- Dark Shinji's introduction to his opponents


 * -|2="I'm no longer the illusion in the mirror. I exist...as the strongest among other Riders!"

- Dark Shinji's proclamation as the strongest of the Riders

Dark Shinji, also known as Dark Side Shinji (鏡像の真司) is the primary antagonist in Kamen Rider Ryuki: Episode Final as well as the Mirror World duplicate of Shinji Kido. Transforming into Kamen Rider Ryuga (仮面ライダーリュウガ), he is one of the 13 Kamen Riders and resembles Kamen Rider Ryuki, but with a black look similar to Ryuki's Blank Form.

Kamen Rider Ryuki: Episode Final
In the alternative continuity of Episode Final, Yui Kanzaki had already met and befriended Shinji Kido when they were both very young. As a result, the young and lonely Yui subconsciously created a duplicate of Shinji in the imaginary Mirror World. Several years later, this Shinji clone would adopt the identity of Kamen Rider Ryuga and join the Rider battle in order to pursue his goal of becoming a real person in the real world.

The Mirror World version of Shinji Kido could survive indefinitely in his own universe without any extra protection, but could only stay in the real world for a short time before he started to disintegrate.

Ryuga was twice mistaken for Ryuki. Ren had seen Ryuga attack Kamen Rider Femme while out fighting a Hydragoon, and thought Shinji had come to understand the meaning of the Rider War. He then demanded that Shinji fight him. Miho first mistook Ryuga as Shinji when Ryuga saved her before Kamen Rider Ouja could kill her. Ryuga himself had destroyed Genocider and reverted Ouja into his blank form. Femme then finished Blank Ouja off.

Dark Shinji then attempted to take Miho's life. He summoned Dragblacker and had it severely wound her. Before he could deal the finishing blow, however, the real Shinji intervened and Dark Shinji left the battle. Miho would later still die because of her wounds inflicted by Dragblacker.

When Yui Kanzaki's life was coming to an end, Dark Shinji appeared from the Mirror World and absorbed the real Shinji into his body, finally "existing" as the self-proclaimed "strongest Rider". With his newfound body, he transformed into Ryuga and almost defeated Kamen Rider Knight in battle. The battle was interrupted, however, by the sound of Shiro Kanzaki screaming at the death of Yui, which caused Ren to leave and come to Shiro's place.

Just as Ryuga was about to deal the finishing blow to Ren (in his human form), the real Shinji inside him (upon seeing Yui's dead body), struggled and seperated from Ryuga. Ryuga would then plead with Shinji to merge once more, because if "they" become the winners of the Rider War, they could still save Yui's life. Shinji did not fall for the words of his doppelganger this time. As a result, Ryuga attempted to kill Shinji as the latter transformed into Ryuki.

A battle between the two Riders occured with both combatants summoning their respective Contract Monsters to fight with each other. At first, Ryuki seemed to have the upper hand as he punched Ryuga into the ground, but Ryuga later retaliated by punching Ryuki into the same building that Ren and Yui's body were staying at. They both used their Final Vents, which resulted in an enormous explosion. In the end, Ryuga was defeated and assumed dead.

Kamen Rider Ryuki: World of If
In this S.I.C. alternate retelling of the story, the remaining Riders are Ryuki (now Ryuga), Knight, Tiger, Ouja and Odin.

After Shinji is possessd by Dark Shinji, becomes Ryuga, he starts to turn into a mindless rampant in the Mirror World. Tiger shows up and tries to stop him only to be easily defeated by Ryuga in his Survive mode.

Hideyuki Kagawa, as Alternative Zero shows up with an army of twelve Alternatives in order to destroy Ryuga. As they prepare to attack Ryuga, Yui Kanzaki shows up. Kagawa laughs; Yui is the source of all their troubles and if she dies everything will end. They attack her instead, but Ryuga, having his sanity returned shields her. He reverts to Shinji and dies.

555 Faces, 1 Treasure
In the World of Faiz, after Daiki takes Tsukasa's Ride Booker, Narutaki takes advantage of the situation as he takes Tsukasa into another dimension to be killed by Kamen Rider Ryuga. However, after interrogating Kiva-la on Tsukasa's whereabouts, Daiki intervenes while claiming it was to get the Faiz Gear as he gives Tsukasa back the Ride Booker.

In his fight with Ryuga, Diend summoned Kamen Rider Kiva ("A monster for a monster.") when Ryuga summoned Dragblacker, with Diend transforming Kiva into the latter's Final Form Ride Kiva Arrow form soon after. He used Kiva Arrow's Final Attack Ride to counter Ryuga's Final Vent. Diend's final attack prevailed, seemingly destroying both Ryuga and Dragblacker.

Episode Yellow: Treasure de End Pirates
During the events of Episode Yellow: Treasure de End Pirates, Kamen Rider Diend Complete Form summons Ryuga alongside seven other Movie Riders using the Attack Ride Card Gekijouban to defeat Kamen Rider G Den-O. Here, Ryuga uses his finishing attack Dragon Rider Kick, in order to better go along with the other Riders' ranged finishing moves (as occurred with Kamen Rider Glaive's Gravity Slash).

OOO, Den-O, All Riders: Let's Go Kamen Riders
Kamen Rider Ryuga was part of a group of reinforcement riders led by Akira Date/Kamen Rider Birth to aid the primary riders in defeating the Rock Great Leader. All the Kamen Riders got on their bikes and performed the All Rider Break attack which destroyed the Great Leader.

That One! Jiro Okamoto: Final Blow Diet!!
Kamen Rider Ryuga appears cited as example of the riders that portrayed the Suit Actor Jiro Okamoto with Caucasus,G4,Odin,Nega Den-O,Leangle and Black later he does not appear in the quiz with the other Riders.

Transform! Ryuki is a Changing Cut!!
Kamen Rider Ryuga appears with Kamen Rider Ouja at the end of episodie,in the Mirror World to figth against Gunji Koriyama the temporary user of the Kamen Rider Ryuki powers.

Kamen Rider Ryuki (Video Game)
Kamen Rider Ryuga appears as an unlockable playable character in Kamen Rider Ryuki With others Kamen Riders of Kamen Rider Ryuki. To unlock him, the player must clear Arcade mode with all riders (including the hidden Ryuki and Knight Survive)

Masked Rider Expansion
Kamen Rider Ryuga appears as a playable character in this trading card game with other Kamen Rider Kamen Rider Heisei-Era, Showa-Era,super sentai,Metal Heroes and other Heroes.

Kamen Rider Climax Heroes OOO
Kamen Rider Ryuga appears in the video game with the others Kamen Riders of the Heisei Era,in Kamen Rider Climax Heroes OOO.

Kamen Rider Climax Heroes Fourze
Kamen Rider Ryuga appears as a playable character in Kamen Rider: Climax Heroes Fourze for the Nintendo Wii.

Kamen Rider Super Climax Heroes
Kamen Rider Ryuga appears as a playable character in the video game with the others Kamen Riders of the Heisei Era,in Kamen Rider: Super Climax Heroes.

Kamen Rider Battride War II
Kamen Rider Ryuga appears as a bossin the video game Kamen Rider: Battride War II,with Mirror Monsters as Mind Boss ,against Kamen Rider Ryuki They both used their Final Vents, which resulted in an enormous explosion. In the end, Ryuga was defeated and assumed dead.

Kamen Rider Battle Rush
Kamen Rider Ryuga appears as a playable and support character in the video game Kamen Rider Battle Rush using Dragon Rider Kick.

Kamen Rider Transcend Heroes
Kamen Rider Ryuga appears as a playable character with others Kamen Riders in the video game Kamen Rider Transcend Heroes.

Kamen Rider Buttobasoul
Kamen Rider Ryuga is a playable character in Kamen Rider Buttobasoul.

Kamen Rider Battle Ganbarizing
Kamen Rider Ryuga is a playable character in kamen rider battle ganbarizing.

Personality
In terms of character, Ryuga was the exact opposite of his real world counterpart. While the real Shinji was kind and innocent, the Mirror World version was cruel and scheming. He was responsible for the death of Kamen Rider Femme, mortally wounding her during their fight. Near the end of the movie, he met his own fate at the hands of his real world counterpart when, after a climatic showdown, the two Riders' Final Vents collided, Ryuki surviving while Ryuga was seemingly perished.

Powers and Abilities

 * Mirrored Human Physiology
 * Immortality: According to Huere, as long as the real Shinji Kido is alive he cannot be defeated. He is shown to be alive even after his defeat by Shinji when their Final Vents collided.
 * Doppelgänger Morphing: Dark Shinji can take the appearance of other beings.

Weaknesses

 * Real World: Creatures from the Mirror World cannot exist in the real world for too long without being disintegrated. This also means that if he ever continues to exist outside of the Mirror World, his powers will be weakened significantly.
 * Shinji Kido: If Shinji Kido is killed, Dark Shinji would cease to exist as well. White Woz predicted that this can even override the invulnerability of the Another Rider. However, Heure suggested that doing so won't work. Although, Dark Shinji is finally subdued for good by Shinji willpower alone, after all, they are both two sides of the same coin.

Equipment

 * Advent Deck - Transformation device and Advent Card holder
 * V-Buckle - Transformation belt
 * Advent Cards - Trinkets that enable a Rider to summon Contract Monsters, access equipment, and use special abilities
 * Black Drag Visor - Ryuga's Visor that enables him to use Advent Cards

Vehicles

 * Ride Shooter - Motorcycle used by any Rider to enter the Mirror World

Portrayal
Mirror Image Shinji Kido is portrayed by Takamasa Suga (須賀 貴匡), who also portrayed the lead role of Shinji Kido. As Kamen Rider Ryuga, his suit actors were Jiro Okamoto (岡元 次郎) and Jun Watanabe (渡辺 淳).

In Kamen Rider Zi-O as Another Ryuga his suit actor was Kazuya Okada (岡田 和也).