Kamen Rider


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This article is about a/an rider in Kamen Rider Den-O.
Den-O Gaoh Human Form
Kamen Rider Gaoh
Gender: Male
Series: Kamen Rider Den-O
Motif: Alligator
Rider Type: Villain
Homeworld: Time
First Appearance: The Diamond Thieving Fang
Last Appearance: Kamen Rider Den-O: I'm Born!
Number of Episode
1 (Den-O)
1 (Movie)
Full list of appearances
Actor: Hiroyuki Watanabe
Kamen Rider Gaoh
"I will devour everything!"
―Gaoh's Phrase[src]

Kamen Rider Gaoh (仮面ライダーガオウ (牙王) Kamen Raidā Gaō?) is a fictional character appearing in Kamen Rider Den-O. He is the main villain in Kamen Rider Den-O's first movie, Kamen Rider Den-O: I'm Born!.


Gaoh (牙王 Gaō?, literally "Fang King") is a thief-king who targets Time Trains and a renegade Kamen Rider who wishes to take over all of space-time by obtaining the legendary GaohLiner to destroy all time as he was fed up with it. He and his Imagin followers took camp at May 2000 to await his plan to come to fruition, by sending the Molech Imagin to 2007 to set the pieces up.

Video Games Appearances

All Kamen Rider: Rider Generation 2


Gaoh in All Kamen Rider: Rider Generation 2.

Gaoh appears as a monster in the video game All Kamen Rider: Rider Generation 2.

Kamen Rider: Battride War II


Gaoh as he appears in Kamen Rider: Battride Wars II

Gaoh will appears as a one of movie Kamen Riders in Kamen Rider: Battride War II. Hiroyuki Watanabe also reprises his role.

Gaoh Form

"Gaoh Form!"
―Transformation announcement[src]
  • Height: 198cm
  • Weight: 102kg
  • Punching power: 7t
  • Kicking power: 6t
  • Maximum Jump Height: 25m
  • Maximum Running Speed: 100m/6.2s

Kamen Rider Gaoh is the only Kamen Rider in Kamen Rider Den-O to only have one form, called Gaoh Form (ガオウフォーム Gaō Fōmu?) and no Imagin partner (similar to Zeronos Altair Form). It is visually based on a crocodile and is similar to Den-O Sword Form. Upon transforming, Gaoh says "I will devour everything!" (全員、俺が喰ってやる! Zen'in, ore ga kutte yaru!?).


Gaoh Belt

Main article: Gaoh Belt

The Gaoh Belt (ガオウベルト Gaō Beruto?) allows for Gaoh to become Kamen Rider Gaoh. It uses a Rider Pass and SetTouch system, just like the Den-O Belt. However, it uses the gold-plated Master Pass (マスターパス Masutā Pasu?) instead. How Gaoh came to obtain the Gaoh belt and the knowledge of its functions is never disclosed, although it could simply have been summoned with the Rider Pass.


Main article: Machine GaohStriker

The Machine GaohStriker (マシンガオウストライカー Mashin GaōSutoraikā?) is Gaoh's personal motorcycle that he uses to pilot the GaohLiner.


Main article: GaoGasher

The GaohGasher (ガオウガッシャー GaōGasshā?) is Gaoh's only weapon and only has a Sword Mode (ソードモード Sōdo Mōdo?). It is visually similar to Den-O's DenGasher Sword Mode, except it has a gold, serrated blade. He uses the weapon for his Full Charge attack, the Tyrant Crash (タイラントクラッシュ Tairanto Kurasshu?), which is similar to Den-O Sword Form's Extreme Slash attack.


Main article: GaohLiner

The GaohLiner (ガオウライナー Gaōrainā?) was built by the king of an ancient civilization. In the time of said civilization, it was referred to by its actual name, God's Train (神の列車 Kami no Ressha?), due to having the power to control all of time, able to easily erase Singularity Points. Due to the vastness of its power, the king sealed the GaohLiner away within the time of its creation. Gaoh sought use of the train, tricking Yukimura into unsealing the cave in which the GaohLiner was sealed in. Upon its release, Gaoh wreaks havoc upon the feudal village before heading into 1988, intent on erasing Ryotaro for having interfered. The GaohLiner battles Zeronos Vega Form until Gaoh attempts to escape in it, engaging the DenLiner/ZeroLiner combo in a battle between the time-trains and is destroyed by them, undoing the damage caused by it.


GaohLiner Kiba (ガオウライナーキバ(牙) Gaōrainā Kiba?) is the first car. In Battle Mode, it has jaws like a crocodile, which can not only bite through targets but fire a powerful energy beam.

Other cars

GaohLiner Kiba is followed by several other train cars which do not have any offensive capabilities. They are black, like Kiba, and have two rows of bronze ridges running along the tops of the cars similar to a crocodile's scales on its back. Within each car is a barrage of missiles that are shot at an enemy.


Wizard Amadum 03

Amadum as Gaoh.

Amadum, the ruler of the world within the Magic Stone with a penchant for dressing as past villains fought by Kamen Riders, appears in Gaoh's costume in Neverending Story.

Behind the scenes


Gaoh is portrayed by Hiroyuki Watanabe (渡辺 裕之 Watanabe Hiroyuki?). He previously played Akio Ishimuro, the commander of XIG, in Ultraman Gaia, and Taiga Saejima in GARO. As Kamen Rider Gaoh, he was portrayed by Yoshifumi Oshikawa (押川 善文 Oshikawa Yoshifumi?).


  • He first appeared in episode 27 of the series but he only transformed into Kamen Rider Gaoh in the movie.
  • Kamen Rider Gaoh was originally supposed to be reused with Kamen Rider Diend Complete Form but his suit was destroyed for scraps to be used for Kamen Rider Yuuki, despite this Yuuki never made it as one of DiEnd Complete Form's cards. [Citation needed]

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