Ryuji Tsukasa

A member of the police force who was Hōjō's senior partner, taking a bullet meant for him in the past that resulted in his hospitalization while his sister was murdered. Arriving to review the G3 Squad's abilities, he questioned their theories while dragging their name down the mud as a cover to kill Hisashi Hanamura, the man who murdered his sister Saori for breaking off their wedding and never being convicted of it due to lack of proof. Succeeding to make Hanamura's death look like the work of an Unknown with a tight alibi, Tsukasa confessed after Hōjō tore it down and turned himself in.

He is portrayed by Masaki Terasoma (てらそま まさき). Terasoma was also known as the voice of Shadow Moon from the Kamen Rider Black series, as well as the voice of Kintaros from Kamen Rider Den-O.