O

A member of EXE, known as "O" (Ｏ（オー）), who was supposed to be given the Ocean Memory (オーシャンメモリ), 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.

Portrayal
"O" is portrayed by Koki Matsumoto (松本 光希).