An engineer working for Apollon Media in charge of developing equipment for the company's superheroes. He normally speaks respectfully in a barely-audible voice, but shouts loudly and brazenly over radios and intercoms. He also has a penchant for adding new upgrades to the heroes' suits that have very little usefulness in the field, such as a complicated clock on the left arm of Tiger's suit for checking the time, and "Good Luck Mode". Good Luck Mode consists of flashy add-ons to Tiger and Barnaby's armor that create a giant fist and leg, respectively, when their power is close to running out. Good Luck Mode was initially thought to increase Tiger and Barnaby's strength, but Saito reveals that the parts and their special effects are just for show and it was actually the pair's excellent teamwork that helped them. Saito also developed a special sleep chamber for Barnaby that allows him to access his memories more clearly in his dreams by depriving him of outside stimuli. Saito displays an almost sadistic level of glee whenever tests must be done on Kotetsu or his suit, seemingly making them agonizing for Kotetsu on purpose.