A co-leader for EXE, Shiro Endo possesses the Edge Memory. He pursues Yui's brother Akira to acquire the Ocean Memory. However, Shiro's posse are defeated and his Gaia Memory destroyed by Kamen Rider Joker before he could use it to transform into a Dopant.
Shiro Endo is portrayed by Shōhei Minamiha
A nameless pet shop employee working under Santa-chan, who goes by the alias of "Energy" is the 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. As the Energy Dopant, he is able to fire blasts of electromagnetic energy as well as use his left arm like a rail gun. 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.
The pet shop employee is portrayed by Tomu Suetaka.
In addition to Shiro Endo and "Energy", there are three other members of EXE who fight Shotaro. They are nicknamed after the first word of the Gaia Memory they possess.
A member of EXE, known as "A", possesses the second Anomalocaris Memory. He transformed into the Anomalocaris Dopant to fight Shotaro as Kamen Rider Joker, though easily defeated by his Rider Punch.
"A" is portrayed by Ryuusuke Ito.
A member of EXE, known as "C", possesses the second Cockroach Memory. He transformed into the Cockroach Dopant to fight Shotaro as Kamen Rider Joker, though easily defeated by his Rider Kick.
"C" is portrayed by Naofumi Kaneko.
A member of EXE, known as "O", who was supposed to be given the Ocean Memory, which was taken by Shiro from Akira. Like Shiro, He had the ability to transform into a Dopant. However, his Gaia Memory is destroyed by Kamen Rider Joker before he could use it.
"O" is portrayed by Koki Matsumoto.
- It is hinted that all members of EXE don't possess Living Connectors, as all the member are shown transforming into Dopants without them. In addition to this is the pressing fact that it is impossible to find the L.C.O.G after the destruction of Museum.