 This article is about a power source in Kamen Rider Drive.
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Core Driviars (コア・ドライビア, Koa Doraibia) were devices developed by Krim Steinbelt, converted to act as the source of power for the Shift Cars, Tridoron, and later the Roidmudes. These allowed them to create or counter the Heavy Acceleration. He allowed his colleague Dr. Banno to use them in the creation of the Roidmudes, which in the end participated in their revolution. [What Is in the Belt's Past?] Apparently, after Krim heard a ruckus on Banno's lab, and finds out his colleague's project is much more lethal on using a human sacrifice for his experiment, causing their partnerships broke apart, Banno stole one of Krim's equipments.
As Krim theorizes, if four Core Driviars belonging to four Over Evolved Roidmudes ignited, the Global Freeze can be ignited, covering the Earth with Heavy Acceleration waves. [When Will the Second Global Freeze Start?]
After the battle against Gold Drive (Banno) and Sigma Circular ended, Krim gathered all of Core Driviar-based arsenals he had so far, as well as the Tridoron, Ride Chaser and Ride Macher and locked them alongside himself beneath Tridoron's parking space at the Drive Pit to ensure that no Core Driviars would fall to the wrong hands again. [Who Will You Entrust the Future to, My Friend?]
Go Shijima, however, later was showed to be working on a new model of Core Driviars known as Neo Core Driviars (ネオ コア・ドライビア, Neo Koa Doraibia). [Drive Saga: Kamen Rider Brain]
Models of Core Driviars[]
Core Driviar-N
- Core Driviar-0 (コア・ドライビア-０, Koa Doraibia-Zero): The prototype of the Core Driviars, these were the ones Krim gave to Banno when he was forced to help him in the development of Roidmudes. Kamen Rider Protodrive's suit is empowered by this type prior to his reprogramming into Mashin Chaser. It is then installed into Mashin Chaser's suit.
- Core Driviar-S (コア・ドライビア-S, Koa Doraibia-S): A miniature Core Driviar that powers each Shift Car and Signal Bike and allows them to counteract Heavy Acceleration.
- Core Driviar-D (コア・ドライビア-D, Koa Doraibia-D): Powers the Drive Driver and its internal system, it is also responsible for preserving Krim's consciousness and allows him to control Shift Cars, putting the belt in a temporary sleep mode. Despite being equipped with a Core Driviar, the Drive Driver itself is not able to negate Heavy Acceleration.
- Core Driviar-N (コア・ドライビア-Ｎ, Koa Doraibia-Enu): The finalized version of the standard Core Driviar used to empower Kamen Rider Drive's Rider System. After Drive gains access to Type Formula, his Core Driviar-N appeared to have taken the form of a car's engine minus the pistons once his Formula One nose-like breastplate is removed. During any tune-up by the Pit Crew, Sparner also directly tunes this Core Driviar.
- Core Driviar-T (コア・ドライビア-Ｔ, Koa Doraibia-Tī): Powers Tridoron.
- Core Driviar-B (コア・ドライビア-Ｂ, Koa Doraibia-Bī): Powers the Ride Booster Set.
- Core Driviar-TH (コア・ドライビア-ＴＨ, Koa Doraibia-Tī Eichi): Powers the Trailer-Hou.
- Core Driviar-M (コア・ドライビア-M, Koa Doraibia-M): Powers the Mach Driver Honoh
- NEX-Core Driviars (ＮＥＸ-コア・ドライビア, Nekusu Koa Doraibia): A new and more advanced Core Driviar that powers Kamen Rider Mach. In addition to counteracting the Heavy Acceleration of Roidmudes, it is able to produce Heavy Acceleration itself.
- Core Driviar-ONE (コア・ドライビア-ＯＮＥ, Koa Doraibia-Wan): In order to fit with Protozero's ability to induce Super Heavy Acceleration, Rinna created the Core Driviar-ONE to empower Kamen Rider Chaser's suit with said ability.
- Core Driviar-F (コア・ドライビア-F, Koa Doraibia-F): The next generation Core Driviars used by Kamen Rider Dark Drive and Kamen Rider Drive Type Special. It can output 200% more power compared to the Core Driviar-N.
- Core Driviar-BN/CP (コア・ドライビア-BN/CP, Koa Doraibia-Bī Enu/Shī Pī): The power source of Kamen Rider Brain. It was completed by Dr. Crystal Peppler in the process of analyzing and reproducing the Roidmude's body, and it seems to have the same performance as the engine installed in Kamen Rider Drive.