Katsumi Daido

Kamen Rider Eternal is a Kamen Rider and the primary antagonist in Kamen Rider Double Forever: A to Z/The Gaia Memories of Fate.

Katsumi Daido
Katsumi Daido is the leader of the organization NEVER that distributes the T2 Gaia Memories. He leads the Dopants created from the T2 Gaia Memories to attack Futo City.

Lost Driver
The Lost Driver is a seond generation Gaia Driver originally used by Kamen Rider Skull. To transform Daido puts the Eternal Memory into the Memory Slot and undergoes the transformation.

Gaia Memory
Eternal's sole Gaia Memory is the Eternal Memory which is used for the transformation.

Eternal Edge
The Eternal Edge is a combat knife that is summoned through the powers of the Eternal Memory.