The hero of the story, stationed on a space station watching over Earth, Choichiro got a bird's eye view of the strange phenomenon that happened in Earth's sky. Dispatched to the Science Guard Party, on his way to Earth, he encountered a red light and in a dream-like vision fused with Ultraman Joneus. Dismissing it as a hallucination he continued to Earth and met up with his team.
Later his theory was proven false as a voice instructed him on how to transform and he switched with Joneus to defend the Earth for the first time. Since then, whenever he had the chance in battle he transformed into the Ultraman, keeping this fact a secret from his team.
Beam Flasher: This device allows Choichiro to transform into Ultraman Joneus. He first charges the Beam Flasher with energy and places it on his forehead. Then, a bright light will cover him and transform him into his Ultra form.
Powers and Weapons
- Combat Training: Choichiro is a trained marksman and combatant.
- Piloting: Choichiro is skilled in piloting rockets and fighter jets.
- Beam Flasher: Choichiro can transform via the Beam Flasher.
- Choichiro is the first animated protagonist in the Ultraman Series.
- Choichiro is the second Showa Ultra's human host that only appeared in just one series and he was never seen again. The first was Kotaro Higashi in Ultraman Taro.