This article is about a/an actor in Kamen Rider Zi-O.

Gaku Oshida (押田 岳 Oshida Gaku) is a Japanese actor and dancer who portrayed Geiz Myoukouin/Kamen Rider Geiz in Kamen Rider Zi-O.


In November of 2016, Oshida was the winner of the 29th Junon Super Boy Contest and made his first drama appearance in an live-action adaptation of the manga series Inside Mari. In mid 2018, he was cast as Geiz Myoukouin in Kamen Rider Zi-O.

Personal life

  • Oshida is currently a student at Waseda University, studying human sciences.
  • Oshida is a member of the street dancing club at his university, which he incorporated into Geiz's transformation pose and fighting styles.
  • According to Oshida, his portrayal of Geiz is inspired by many rival Riders of past series such as Kamen Rider Sasword and Kamen Rider Kaixa, and has admitted that he bears a resemblance to Ren Akiyama/Kamen Rider Knight.



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