Viral Cores

The Viral Cores (バイラルコア), powered by Core Driviars, are miniature car-like devices created and used by the Roidmudes for the purpose of sustaining, empowering, and evolving their existence. They are evil counterparts of the Shift Cars and Signal Bikes.

Regular Cores
Normally, Viral Cores are used by the Roidmudes to evolve them from their weaker Low-Class forms into their stronger Advanced forms. Low-Class Roidmudes can also use three at the same time, or two at the same time if they have already evolved into an Advanced Roidmude, to transform into a Giant Roidmude based on their motif. When Chase was originally Proto Drive, he could use the regular Viral Cores, presuming they were not too damaged, to read the memories of defeated Roidmudes by inserting them into his Shift Brace. Like the Roidmudes, the Viral Cores come in three types.


 * Cobra Viral Core (コブラバイラルコア): A Viral Core that can give a new body for the Cobra-type Roidmudes' core upon completing their evolution. Unevolved Cobra Roidmudes can also use three at the same time, or two at the same time if they have already evolved into an Advanced Roidmude, to transform into a giant cobra.
 * Spider Viral Core (スパイダーバイラルコア): A Viral Core that can give a new body for the Spider-type Roidmudes' core upon completing their evolution. Unevolved Spider Roidmudes can also use three at the same time, or two at the same time if they have already evolved into an Advanced Roidmude, to transform into a giant spider.
 * Bat Viral Core (バットバイラルコア): A Viral Core that can give a new body for the Bat-type Roidmudes' core upon completing their evolution. Unevolved Bat Roidmudes can also use three at the same time, or two at the same time if they have already evolved into an Advanced Roidmude, to transform into a giant bat.

Chaser Cores
Chrome versions of the Viral Cores, known as Chaser Viral Cores (チェイサーバイラルコア), are used by Drive's rival, Mashin Chaser, to change into his Tune Chaser forms. Unlike the regular Viral Cores, they have as much sentience as Drive's Shift Cars and Mach's Signal Bikes. When Chase eventually defected from the Roidmude cause and became a Kamen Rider once more, the Chaser Viral Cores chose to defect along with him.


 * Chaser Spider Viral Core (チェイサースパイダーバイラルコア): An enhanced Viral Core that summons the E-Circular and turns Mashin Chaser into his Tune Chaser Spider form, equipping him with the pincer-like Fang Spidey. When initiating Triple Tune, Chaser inserts this Core first.
 * Chaser Cobra Viral Core (チェイサーコブラバイラルコア): 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.
 * Chaser Bat Viral Core (チェイサーバットバイラルコア): An enhanced Viral Core that summons the E-Circular and turns Mashin Chaser into his Tune Chaser Bat form, equipping him with the crossbow-like Wing Sniper. When initiating Triple Tune, Chaser inserts this Core second.

Neo Viral Cores
The Roidmudes later gain access to Neo Viral Cores (ネオバイラルコア), completely red-colored variants of the standard Viral Cores created by Roidmude 001, which will allow them to combine both Roidmude and human biology into one. However, these Viral Cores can be only used once, so if a Rider separates the components of a combined Roidmude apart, the Viral Core would be wasted and the Roidmude would revert into its Low-Class form, resulting in the need of a new Neo Viral Core. A Roidmude is capable of using the Neo Viral Core to evolve solely, but the evolution would be considered incomplete and thus needed a human partner. Since the Neo Viral Core works on humans by fusing them with their Roidmude partner through their darker heart, using it can also increase the human target's negative sides.

Like the Signal Bikes and Shift Cars, holding a Neo Viral Core allows a human to move normally during Heavy Acceleration, as well as said items does have a level of sentience.


 * Neo Bat Viral Core (ネオバットバイラルコア): An advanced Bat Viral Core that can be used by a Bat-type Roidmude to combine with a human. First appears in Kamen Rider Drive Vs. the Terrifying Zunbo Ganbo Roidmude to evolve Roidmude 007, which was used as the preview of episode 25.
 * Neo Spider Viral Core (ネオスパイダーバイラルコア): An advanced Spider Viral Core that can be used by a Spider-type Roidmude to combine with a human. First appears in episode 27 to evolve Roidmude 050.
 * Neo Cobra Viral Core (ネオコブラバイラルコア): An advanced Cobra Viral Core that can be used by a Cobra-type Roidmude to combine with a human. First appears in episode 29 to evolve Roidmude 067.

Other Cores

 * Lupin Blade Viral Core (ルパンブレードバイラルコア): A Viral Core used by Kamen Rider Lupin, allowing him to use the blade mode on his Lupin Gunner. When used in the DX Drive Driver or Mach Driver, it gives the sound for a Tire Exchange into Dark Rider or Signal Exchange into Warui, respectively..