The colossal kaiju, Reugosite, is on his way towards Earth in attempts to destroy it all! The Minato brothers and their mother, Mio Minato, have managed to develop a way to contain Reugosite within a Crystal! Their strategy is successful, but as Mio prepares to send the Crystal into the other dimension, Saki Mitsurugi, who is after the complete annihilation of Reugosite, interferes! The two Ultra Brothers then declare that they will save both the Earth and Saki! Saki then transforms into a super armoured kaiju known as Grigio Regina, in order to fulfil her mission…
Yuya Hirata
Katsumi Minato / Ultraman Rosso
Ryosuke Koike
Isami Minato / Ultraman Blu
Arisa Sonohara
Asahi Minato
Ginnojo Yamazaki
Ushio Minato
Kaori Manabe
Mio Minato
Kaede Yuasa
D.R.L.N. (voice)
Motoki Fukami
Makoto Aizen / Cereza
Ayane Kinoshita
Saki Mitsurugi / Grigio
Minegishi Kiara
Isami Minato (Young)
