This article is about a/an rider in Kamen Rider Ryuki.
For the A. R. World version from Kamen Rider Decade, see Kamen Rider Imperer (A.R. World).
For the New User of Kamen Rider Imperer in Kamen Rider Zi-O, see Ishida.
"Why is this happening? I... I... just wanted to be happy..."
―Mitsuru's final words before vanishing.[src]

Mitsuru Sano (佐野 満 Sano Mitsuru) was Kamen Rider Imperer (仮面ライダーインペラー Kamen Raidā Inperā), one of the 13 Kamen Riders in the tokusatsu TV series Kamen Rider Ryuki.


Although Mitsuru came from an affluent family, he worked in a parking garage, occasionally cleaning rich people's cars. His father sent him out into the world so that he could learn the hardships of life and not be spoiled by a rich upbringing. However, due to his poor lifestyle, he believed friendship, respect, and love could be bought, and thus accepted Kanzaki's proposal to become a Kamen Rider in order to become rich and lead a happy life. He became a mercenary of sorts, attempting to sell his strength as a Kamen Rider to the various factions within the remaining Riders.

He first approached Shinji Kido and Ren Akiyama, flattering them with praise after seeing them fight. Though Shinji was fooled, Ren brought him back to his senses and refused him. Sano attempted to appeal to even Shuichi Kitaoka and Takeshi Asakura, failing to gain employment from either.

Sano finally turned to Satoru Tojo and Hideyuki Kagawa for assistance. Kagawa, though knowing Sano did not fully understood his motives, allowed Sano to work with him and Satoru.

After his father died, he inherited his father's business and became the boss of a major company. Because of his new found lifestyle, he wanted to give up the Rider war and enjoy his wealth. However, Kanzaki reminded him of his contract with Gigazelle and its fellow Zelles as well as what would happen to Sano if he did not fulfill his side of the contract with them. Shaken, Sano decided to use part of his inheritance to buy the services of the other Riders, as he himself had tried to offer. Showing up at their doorstep with a suitcase of contract money, he appealed to Shinji and Ren, but was flatly refused. Sano tried the same tactics on Kitaoka, and seemingly succeeded, but Sano cancelled the contract days later after deeming Kitaoka "unreliable."

Sano's contract with Kagawa was later cut off when Kagawa was killed (by Satoru), but he still kept Satoru as a good friend and even hostelled him when Satoru was injured from battles before. It was then Satoru confessed his convictions and called Sano a friend.


Sano in his final moments.

Though Satoru was grateful to Sano for caring for him, he later back-stabbed Sano, who was later wounded and left for dead. Though he survived the attempt on his life (which Satoru thought he did finish Sano off), Sano was ambushed by Ouja while attempting to make his escape back to the real world. Ouja then destroyed Imperer's Advent Deck with his Veno Crash attack, making him unable to leave the Mirror World and dissolve within minutes, screaming and begging for help.

Ironically, Imperer, like Kamen Rider Gai and Kamen Rider Scissors, as well as the Alternatives, did not reappear in the epilogue after Kanzaki reverted time.

OOO, Den-O, All Riders: Let's Go Kamen Riders

Kamen Rider Imperer in Legend War

Kamen Rider Imperer 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. OOO, Den-O, All Riders: Let's Go Kamen Riders

Fighting Style

Imperer is a melee based Rider. He utilizes Muay Thai - Style attacks such as knee strikes enhanced by his Gazelle Visor. He also uses the Spin Vent as his primary weapon. However, his biggest fighting advantage is in numbers, since his Contract Monster Gigazelle is accompanied by Megazelle and Omegazelle (later additions were Magazelle and Negazelle). His significant number of Contract Monsters can easily overwhelm other Riders.

However, Imperer's numbers strategy can be disrupted, forcing Imperer to fight Riders by himself. Another weakness is that the accompanied Contract Monsters are not really Imperer's, since they just follow Gigazelle, and often prove themselves to be inconsistent, either helping or attacking Imperer.

Kamen Rider Imperer

Kamen Rider Imperer

Kamen Rider Imperer

Rider Statistics

  • Rider Height: 195 cm
  • Rider Weight: 94 kg

Ability Parameters:

  • Punching Power: 10 t (200 AP)
  • Kicking Power: 20 t (400 AP)
  • Maximum Jump Height: 50 m
  • Maximum Running Speed: 100 m per 5 seconds
  • Sight: 10 km
  • Hearing: 18 km

Sano can transform into Kamen Rider Imperer using his Advent Deck and V-Buckle upon forming a contract with a Gigazelle. His Visor, the Gazelle Visor (ガゼルバイザー Gazeru Baizā), is mounted on his right knee. Imperer's punching power, kicking power, and running speed are identical to Ryuki's, while his jump height is significantly higher.

Through the use of the Spin Vent Advent Card, Imperer can arm himself with the Gazelle Stab (ガゼルスタッブ Gazeru Sutabbu), an arm-mounted pair of drills derived from Gigazelle's horns and forehead.

By using his his Final Vent, Imperer can execute his finisher, the Drive Divider (ドライブディバイダー Doraibu Dibaidā), in which he summons a horde of Zelle Mirror Monsters to surround him and stampede the enemy. Imperer then emerges from the crowd and delivers a knee strike to the opponent's head.

Appearances: Ryuki Episodes 40-44, 13 Riders

Contract Monster

Main article: Gigazelle


  • 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
  • Gazelle Visor - Imperer's Visor that enables him to use Advent Cards


Mitsuru Sano is portrayed by Takashi Hyuga (日向 崇 Hyūga Takashi). As Kamen Rider Imperer, his suit actor was Masashi Shirai (白井 雅士 Shirai Masashi).


  • His name is based on "Impala". The name is also based on "Imperial " since he commands more than one gazelle-like Contract Monsters.
  • His Rider alias could also be romanized "Impaler" (a reference to his impaling attacks) and is pronounced as such the one time it is said in the series.
  • He shares the same last name as Tony Sano, the actor who plays his American Counterpart. Interestingly, the last name is also shared with Gaku Sano, who would play as a Rider twelve years later.
  • Imperer is the first Rider to use a drill for a weapon.
  • Imperer is one of three riders in the series who has their Visor attached to their suit, the other two being Gai whose Visor is on his shoulder, and Verde whose Visor is mounted on his thigh. The same is said for their respective American counterparts.
  • Imperer is unique among the other Riders in that his color scheme does not match that of his contract monster. Gigazelle is primarily purple-colored, but Imperer's color scheme is brown.
  • Like other Mirror Riders, he died an ironic death: He actually achieved his wish of becoming happy and had no more need of the Rider War to keep it, but he was forced to fight either way and eventually died. Aside from that, Sano was a Rider who relied on others in order to stay alive, but he died after betraying Shinji because Tojo betrayed him, and was eventually killed by Asakura, all three being Riders he initially wanted to partner up with.
  • Coincidentally, he shares his name with a character from the soccer manga series Captain Tsubasa.


See Also

External Links

Icon-ryuuki Kamen Rider Ryuki
The 13 Kamen Riders
Shinji Kido - Ren Akiyama - Masashi Sudo - Shuichi Kitaoka - Miyuki Tezuka - Jun Shibaura - Takeshi Asakura - Satoru Tojo - Mitsuru Sano - Kamen Rider Odin - Goro Yura
Movie Exclusive: Itsuro Takamizawa - Miho Kirishima - Dark Shinji
The Alternatives
Hajime Nakamura - Hideyuki Kagawa
Kanzaki family
Yui Kanzaki - Shiro Kanzaki - Sanako Kanzaki
ORE Journal
Daisuke Okubo - Reiko Momoi - Nanako Shimada - Megumi Asano
Mirror Monsters
The Contract Monsters: Dragreder - Darkwing - Volcancer - Magnugiga - Evildiver - Metalgelas - Venosnaker - Genocider - Destwilder - Gigazelle - Goldphoenix - Biogreeza - Blancwing - Dragblacker - Psycorogue
Wild Mirror Monsters: Spiders (Dispider - Mispider - Respider - Solospider) - Zelles (Gigazelle - Megazelle - Magazelle - Negazelle - Omegazelle) - Zebraskulls (Iron - Bronze) - Boarders (Wildboarder - Shieldboarder) - Biters (Zenobiter - Terabiter) - Krakens (Bakraken - Wiskraken) - Gulds (GuldThunder - GuldStorm - GuldMirage) - Abyss (Abysshammer - Abysslasher - Abyssodon) - Buzzstingers (Hornet - Bee - Wasp - Frost - Broom) - Sheerghosts (Sheerghost - Raydragoon - Hydragoon) - Deadlemur - Gelnewt - Sonorabuma - Brobajell - Fake Kamen Rider Agito
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