ULTRAMAN R/B is the first ever Ultraman series to feature two brothers “Katsumi Minato” and “Isami Minato” who transform into Ultraman.

The elder brother Katsumi transforms into Ultraman Rosso by using a R/B Crystal and the R/B Gyro.
His basic type is Ultraman Rosso Flame, transformed using Taro Crystal that contains the attribute of "Fire".
Inheriting characteristics from Katsumi, Ultraman Rosso overwhelms his enemies by power fighting hand-in-hand while observing his surroundings during the battle.