- Ultraman Groob, using the mysterious power of the Makoto Crystal, the three Ultra Siblings, Ultraman Rosso, Ultraman Blu, and Ultrawoman Grigio become one Ultraman!
- Ultrawoman Grigio is Asahi Minato, the youngest of the Minato siblings. Though inexperience compared to her brothers, she backs it up with her defensive abilties.
- Ultraman Tregear (voiced by Yuuma Uchida) is a new Ultraman who is as powerful as Ultraman Geed Ultimate Final.
Lastly, the film's theme song is revealed, titled "Tsubasa no Crystal" and it will be performed by Takeshi Tsuruno and DAIGO. Both actors previously played Ultraman as Tsuruno is best known for his role as Shin Asuka/Ultraman Dyna, while DAIGO played Ultraman Zero's second human host, Nozomu Taiga. Ultraman R/B the Movie: Select! The Crystal of Bond is set for a March 8, 2019 release in Japan.