Sougo Tokiwa (Mirror World)

"I am you. But you are not me."

- Mirror Sougo introduces himself to Sougo

This Sougo Tokiwa (常磐ソウゴ), alternatively spelt Sogo Tokiwa, also known as Mirror Sougo or Dark Sougo, is the Mirror World version of his real world counterpart who can transform into Kamen Rider Zi-O (Mirror World version) (仮面ライダージオウ（ミラーワールドバージョン）).