Hiroto was born on Mars and had never been to Earth. When his father asked him to join him on a mission to Earth. He accepted the offer and embarked on his mission to deliver his mother's ashes to Earth. However, the ship encountered distress. Hiroto sacrificed himself to save the ship and the rest of the crew. Ultraman Mebius failed to rescue him as the Ultra was arriving to Earth for the first time. He entered the Ultra Zone where he was killed before he could reach Earth. After saving his father, Mebius used the form of him as his human disguise to honor Hiroto's heroism. A few days later, Mebius as Mirai Hibino appeared at the Ban residence and showed his body to the father of Hiroto Ban, saying he wanted to honor his bravery but captain Tetsuro simply told him to leave, as his appearance grieved the widower. However, after Sakomizu arrives, the captain gave Mebius his blessing to use his son's form, the phrase he used was what Mebius used to name himself.
- Hiroto Ban was portrayed by Shunji Igarashi - the actor who also played Mirai Hibino and was also the voice actor for Ultraman Mebius at that time. This was the other role which Shunji Igarashi played aside from Mirai Hibino.
- Hiroto's original fate was to have been rescued by Mother of Ultra from the Ultra Zone.