Kamen Rider Eternal (Battride War)

Kamen Rider Eternal (仮面ライダーエターナル) is the supporting antagonist in Kamen Rider Battride War who assist Callas into further his nefarious purpouses.

Biography
An unknown man stumbles upon a T2 Eternal Gaia Memory and a Lost Driver and use it to become Kamen Rider Eternal. He was brought to a bird cage Mnemosyne by Callas. At first he battles the Riders and defeated. But Callas sees this as an opportunity and escort him away before Canaria could catch him. He appears again, now brainwashed by Callas into fighting the Riders again. However, thanks to the teamwork effort by Decade, Double and Fourze he was defeated by Fourze's Rider Rocket Drill Kick. But, he arise, pretty much alive with the help of Callas and left into his portal. He makes his final appearances at the Final Level, and was seen defeated by OOO Gatakiriba's Gatakiriba Kick along with Skull and several foot soldiers.

Lost Driver
The Lost Driver is a second generation Memory Driver belt originally used by Kamen Rider Skull. To transform the user puts the T2 Eternal Memory into the Memory Slot and undergoes the transformation.

Maximum Slots
In addition to the Maximum Slots on the Lost Driver and the Eternal Edge, Kamen Rider Eternal Blue Flare has a series of Maximum Slots on belts around his chest, right arm, and left leg, for a total of 26 for every T2 Gaia Memory.

Gaia Memory

 * Eternal Memory: The original Eternal Memory is similar to it's T2 counterpart albeit imperfect, simply preventing movement for users of T1 Gaia Memories. When used by incompatable users, the Memory only allows access the Red Flare form. Jun Kazu even commented that when he recieved the memory, he was told it was a "fickle Memory" However, for more compatable users like Katsumi, they can access the Blue Flare form. After Eternal was able to defeat Eyes Dopant, the original Eternal Memory was damaged, as it was simply a prototype, and Katsumi decided to discard it, believing that he would reunite with the same type of the Memory again.
 * T2 Eternal Memory: Kamen Rider Eternal's primary Gaia Memory, used for the transformation and Maximum Drives. This unique Gaia Memory has power over other Gaia Memories, neutralizing the original Gaia Memories use and allows Eternal to access the power of the other T2 Gaia Memories without transforming with them.
 * T2 Zone Memory: One of the 26 T2 Gaia Memories. Used to gather the other T2 Memories in one place when placed into the Maximum Slot on the Lost Driver.

Eternal Edge
The Eternal Edge (エターナルエッジ, Etānaru Ejji) is Eternal's primary combat knife that is summoned through the powers of the Eternal Memory. When the Eternal Memory is placed in the weapon's Memory Slot it initiates the Eternal Requiem Maximum Drive which disables the original Gaia Memories. With the Eternal Memory, it can initiate a Rider Slash finisher called Bloody Hell Blade, which a glowing blue sword beam is released from the weapon. When the Zone Memory and Eternal Memory are placed into the Maximum Slot on the Lost Driver and the weapon's Memory Slot, it initiates the Eternal Never End Maximum Drive finisher, where a huge ball of energy is formed above Eternal and drop at the opponent.

Trivia

 * This new user of Kamen Rider Eternal can also compatable with the Gaia Memory as he became Eternal Blue Flare similar to his predecessor.