Kamen Rider Decade



Rider Type



Earth (AR Ryuki World)

First Appearance

Decade Ep 6 "Battle Trial: Ryuki World"

Last Appearance

Decade Ep 7 "Super Trick of the Real Criminal"

Number of Episode Appearances

2 (Decade)


Masato Irie

Kamen Rider Abyss (仮面ライダーアビス Kamen Raidā Abisu?) is a fictional character in the 2009 Kamen Rider Series Kamen Rider Decade. Unlike other Kamen Riders to appear in the other iterations of reality in Decade, Abyss is original to the series and did not originally appear in Kamen Rider Ryuki although his contract monsters, Abysshammer and Abyssslasher, did.

Fictional character biographyEdit

Kamata (鎌田) is actually the Paradoxa Undead (パラドキサアンデッド, Paradokisa Andeddo), a Category King Undead who was brought into Ryuki's World by Narutaki. Assuming the guise of sub-chief editor of the Atashi Journal appeared to support Tsukasa and company in their investigation the scene of chief editor Reiko Momoi's murder to clear Natsumi Hikari, helping provide whatever info he could before he and Tsukasa are summoned to join the Kamen Rider Trial in the Mirror World. When Imperer interferes in the fight, Abyss decides to take advantage of this turn of events to see Decade's abilities, overseeing the later fight between Decade and Knight before attempting taking them and Ryuki out. But once Ren acquires the Time Vent from Odin, Shinji uses it so he and Tsukasa can stop Reiko's murder, learning that Kamata is the culprit, using his Undead powers to kill Reiko. After being defeated by Decade and Ryuki, with his deck shattered, Kamata's true nature as an Undead is revealed by Narutaki who takes him back to his home: Blade's World.

Kamen Rider AbyssEdit

Rider height: 187 cm


weight: 92 kg

Ability perimeters

  • Punching power: 10t (200AP)
  • Kicking power: 15t (300AP)
  • Maximum jump height: 30m
  • Maximum running speed: 100m/5s

Like the other riders in Ryuki series, Kamata transforms into Kamen Rider Abyss through his Advent Deck and his Advent Belt.yRi

Contract MonstersEdit

Abyss is unusual amongst the Kamen Riders in that he has two Contract Monsters: the Abysslasher (アビスラッシャー, Abisurasshā), a humanoid shark that can fire high pressure streams of water, and the Abysshammer (アビスハンマー, Abisuhanmā), a humanoid hammerhead shark. As Kamen Rider Abyss, Kamata uses his Final Vent to combine his Contract Monsters into a creature known as Abyssodon (アビソドン Abisodon?), a single giant mechanical shark with a chainsaw attachment (giving it the appearance of a sawshark when in use) and machine gun eyes (giving it the appearance of a hammerhead shark when in use). Unlike other Riders in the Mirror World, the loss of the Contract Monsters did not result to Abyss going into Blank Form.