Enigma

Enigma (エニグマ) was an interdimensional gateway created by scientist Kaisei Mogami, connecting the World of Build with the prime World of Ex-Aid.

Ten years ago, while researching parallel universes, Mogami found the Bugster Virus at the Sky Wall before concluding that the virus was from a parallel universe. He wanted to create a gateway, but could not get research money for it so he moved to Namba Heavy Industries to continue his research. With the help of Takumi Katsuragi, he developed both the Kaiser System and the Enigma which allowed him to make contact with his World of Ex-Aid counterpart who was a Foundation X scientist. However, he lost the left side of his body due to an Enigma accident, caused by Takumi who opposed his ultimate goal. He ultimately resurfaced to cause the fusion and destruction of the two universes using the Enigma in order to fuse with his counterpart into a single immortal entity and become the ruler of all the universes. However, he was defeated by Sento Kiryu and Emu Hojo.

Appearances

 * Icon-build.png Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders