This article is about a/an monster in Kamen Rider Drive.

The Cobra Type Roidmudes (コブラ型ロイミュード Kobura-gata Roimyūdo) were one of the three basic combatmen types of Plain Roidmudes. They can also forsake their humanoid forms and transform into a larger shape more befitting their cobra motif, called a Cobra Type Roidmude Berserk Body (コブラ型ロイミュード暴走体 Kobura-gata Roimyūdo Bōsō-tai), via the absorption of three Viral Cores or two if they have already evolved into their Evolution State (進化態 Shinka-tai) form.

Through data stolen from the Roidmudes through a currently unknown source, Megahex created a force of Plain Roidmudes (Lost Number) (プレーンロイミュード(ロストナンバー) Purēn Roimyūdo Rosuto Nanbā), mechanical and numberless recreations of the Plain Roidmudes, to combat the Kamen Riders that stood in his way of assimilating Earth and its inhabitants. What surviving members of these Plain Roidmude (Lost Number) in the final battle between ZZZ Megahex's army and the Kamen Riders and Roidmude generals were deactivated upon ZZZ Megahex's permanent death. Kamen Rider × Kamen Rider Drive & Gaim: Movie War Full Throttle

Recorded on the Eradicated Roidmude Table, Cobra Type Roidmudes were coded bronze.

A total of 32 Cobra Type Roidmudes existed among the 108. They became extinct with the death of Medic. Why Must They Fight?

Cobra Type Roidmudes

Types and Evolutions

A Cobra Type Roidmude was enlargedIcon-crosswiki by the YokaiIcon-crosswiki page, Kyuemon IzayoiIcon-crosswiki.

A single Cobra Type Roidmude transformed into a Berserk Body through the use of their corresponding Viral Cores.

A total of nine Cobra Type Roidmudes were modified to join Medic's Reaper Legion.

A total of eight Cobra Type Roidmudes achieved evolution into an Advanced Roidmude.

A total of six Cobra Type Roidmudes achieved a standard Evolution State.

A total of two Cobra Type Roidmudes synchronized their emotions with humans through use of their corresponding Neo Viral Cores to achieve a Fusion Evolution State.

A total of two Cobra Type Roidmudes amplified their chosen emotions to achieve a Over Evolved State. Of these, the latter survived to join the Promised Number.

One Cobra Type Roidmude achieved evolution through unnatural means. In addition, the hollowed husk of a Cobra Type Roidmude was used by a human to achieve an unnatural evolution.

Some Cobra Type Rodimudes seems able to used additional body part weapon, the common weapon is a large gatling gun type firearm.

Powers and Abilities

Heavy Acceleration
The signature ability of the Roidmude is to somehow slow down the movement of surrounding objects', including that of humans, with their unaffected consciousness aware of their impass during this time. One can be protected by the Heavy Acceleration effect by carrying Shift Cars or Signal Bikes on their person.
Energy Attack
Plain Roidmudes all have machine-gun-like fingers from which they can fire energy bullets. This feature is forsaken for greater power upon evolution into an Advanced Roidmude.
Advanced Camouflage
Roidmudes can generate disguises through film-layers around their body that function similar to the cerebral cortex.
Data Mimicry
Roidmudes can transform their bodies into data to travel within the electricity/cyberspace while in their Core modes. They can as well temporarily morph their bodies into data to easily phase through solid objects.
Superhuman Strength
Cobra Type Roidmudes possess herculean strength. As demonstrated in the Global Freeze, at least two of them able to kick a giant bowling pin and effortlessly threw a giant bowling ball to a building.
Motif Powers
Certain Plain Roidmudes can use abilities or powers that eventually become an important part of their evolution.

Viral Cores


Cobra Viral Core

Cobra Viral Core (コブラバイラルコア Kobura Bairaru Koa): A Viral Core that can evolve Cobra Typed Roidmudes.

KRDr-Viral Chasercobra

Chaser Cobra Viral Core

Chaser Cobra Viral Core (チェイサーコブラバイラルコア Chiesā Kobura Bairaru Koa): An enhanced Viral Core that summons the E-Circular and turns Mashin Chaser into his Tune Chaser Cobra form, equipping him with the whip-like Tail Whipper. When initiating Triple Tune, Chaser inserts this Core last.


  • Tune Chaser Cobra: Episodes 7-8, 15-16
  • Triple Tune: Episodes 21-22


Neo Cobra Viral Core

Neo Cobra Viral Core (ネオコブラバイラルコア Neo Kobura Bairaru Koa): An advanced Cobra Viral Core that can be used by a Cobra Type Roidmude to combine with a human. First appears in episode 29.


Cobra-Type Roidmude (029) Early Design

Concept art of Roidmude 029, a Cobra Type Roidmude

The Cobra Type Roidmudes were designed by Takayuki Takeya, who designed all of the Roidmudes in Kamen Rider Drive.


  • This is the third Roidmude type to have its entire race eliminated.
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