Kaito Touma is the main protagonist of Ultraman Max. He is the human host of Ultraman Max as well as a member of DASH (Defense Action Squad Heroes).
History
Ultraman Max
After loosing his parents during an Earthquake, he made it his mission to protect and help others so that they would not suffer the same pain he felt. This eventually led to him trying to join the defense force team DASH. Unfortunately, he failed his training during the first time.
One day while two Kaiju were rampaging p, he helped one of the officers get to a safe place after her plane crashed, and began taking over. While flying, he was saved by Ultraman Max. Having been merged with him, the two began defending the earth from various threats.