Members of Project.R:
- Hideyuki Takahashi (Singer of the Engine Sentai Go-onger opening)
- Takayoshi Tanimoto (Vocalist of the Juken Sentai Gekiranger opening)
- Sister MAYO (Volcaist for Mahou Sentai Magiranger ending "Jumon Kōrin ~ Magical Force")
- NoB (Vocalist of the GoGo Sentai Boukenger opening)
- Hideaki Takatori (Vocalist of the Ninpuu Sentai Hurricaneger opening)
- Mayumi Gojo (Performed songs for the Pretty Cure series before performing vocals on the Mahou Sentai Magiranger image song "Eien ni…")
- Psychic Lover (Composed of vocalist YOFFY and guitarist IMAJO, performed the Tokusou Sentai Dekaranger opening)
- Tsuyoshi Matsubara (former member of Ultra Series vocal group Project DMM and was vocalist for the Samurai Sentai Shinkenger image song "Rokunin no Samurai" before performing the Kaizoku Sentai Gokaiger opening)
- Saki Oshitani (previously performed the B-side "Over the Star" on the Dragon Ball Kai single "Yeah! Break! Care! Break!" before performing as one of the many vocalists on the Gokaiger ending theme)
- Showgo Kamada (Singer of the Zyuden Sentai Kyoryuger opening)
- Daiki Ise (previously performed the image songs "Kamitsuki Brave" and "Shijou Saikyo no Brave" before performing the Ressha Sentai ToQger opening)
- Yohei Onishi (previously performed the Ressha Sentai ToQger image song "Ame no Chi Rainbow" before performing the Shuriken Sentai Ninninger opening)
This band provides examples of:
- Anime Theme Song: Some members of Project.R had these before the band was formed, Mayumi Gojo being one of them.
- Expy: They're a Sentai band version of JAM Project.
- Theme Music Power-Up: Since Go-Onger.