C

A member of EXE, known as "C" (Ｃ（シー）), possesses the second Cockroach Memory (コックローチメモリ). He transformed into the Cockroach Dopant (コックローチ・ドーパント) to fight Shotaro as Kamen Rider Joker, though easily defeated by his Rider Kick.

Portrayal
"C" is portrayed by Naofumi Kaneko (金子 直史).