|This article is about a/an Dopant identity in Kamen Rider W.|
- Height: 195cm
- Weight: 160kg
As the Energy Dopant, the user is able to fire blasts of electromagnetic energy as well as use his left arm like a rail gun.
- Main article: Energy (EXE)
The main user of the Energy Memory was a nameless pet shop employee working under Santa-chan, who goes by the alias of "Energy" (エナジー Enajī), the true leader of EXE. It is only after the members of his group are arrested that Energy reveals himself as he attempts to kill Shotaro for meddling in his affairs. He is defeated when Philip returns and joins with Shotaro to become Kamen Rider Double CycloneJoker once more, destroying the Energy Memory through the Joker Extreme Maximum Drive.