|This article is about a/an actor in Choudenshi Bioman.|
He reprised his role in the film Gokaiger Goseiger Super Sentai 199 Hero Great Battle (2011). He reprised Red One again the next year in Kamen Rider × Super Sentai: Super Hero Taisen, voice only this time, as Red One did not appear out of costume.
On August 27, 2016, Ryosuke was told by his doctors that he was diagnosed with esophageal cancer and he would have to undergo surgery in September. As part of a moral support campaign, his fellow Biomen appeared to cheer him on. Michiko Makino and the Tokusatsu Network began a moral support campaign with the hashtag "#GoRedOne", where Super Sentai fans all over the world could give Ryosuke their messages of love, hope and support through this difficult time though various social media outlets.
- Ryosuke Sakamoto at Japanese Wikipedia
- Ryosuke Sakamoto at the Kamen Rider Wiki
- Ryosuke Sakamoto at the Metal Heroes Wiki