Kamen Rider Core

Kamen Rider Core is the main antagonist in the Kamen Rider Double Detective and OOO Crossover.

History
Core possessed various traits from previous Riders. The main source of his power came from a crystallized form of Earth's energy. The crystal was destroyed by Double Detective CycloneJokerXtreme's Bicker Charge Break and OOO's OOO Bash. This, however, did not drain his powers completely, as Double Detective and OOO had believed. Instead, it only removed some of his power, and in his fury he stopped (albeit briefly) OOO from assuming Blazing Combo. However, this was only temporary, Core was then slain at the hands of Double Detective CycloneJokerGoldXtreme's Golden Extreme & OOO Blazing Combo's Prominence Drop.

Personality
Being an amalgamation of the memories of all previous Riders and their battles, Core believed himself to be the most powerful Rider, and being for that matter, in existence. He sought to use the power he had to rule over the rest of the Earth. He was arrogant, calling Double Detective and OOO losers and worms. He responded with shock and fury when Double Detective and OOO told him that he was only a fraud that was imagining himself as having done accomplishments the other Riders did and how he was nothing compared to true Kamen Riders, who protected the innocent even when it interfered with their own personal lives.

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Core is purely an energy-based Rider, he was created from the Scorpion, Crab, and Shrimp Core Medals, which appeared to house his consciousness, merging with the Memory Memory which held the memories of all of the Kamen Riders and the True Gaia Memory, thanks to the Pteradon Yummy gathering them.
 * Rider height: 18 m
 * Rider weight: 7 t
 * Ability perimeters:
 * Punching power: 67.4 t.
 * Kicking power: 84 t.
 * Maximum jump height: 98.4 m.
 * Maximum running speed: 100 m. per 1 sec.

Bike State
Core can turn his lower body into a motorcycle called the Bike State, reminiscent of Masked Rider Warriors' Rider Machines, to increase his speed. Core's Bike Mode also proved to be durable enough to smash through dense rocks as if they were nothing.