"Crimson lightning. Horned Ninja, KabutoRaiger!"
Ikkou Kasumi (霞 一甲, Kasumi Ikkō) / Horned Ninja KabutoRaiger (角忍カブトライジャー, Tsunonin Kabutoraijā): The older brother, called the "Horned Ninja," his original goal was to raise Ikazuchi as the greatest Ninja school using "it."
Biography
Learning of the method his father intended, Ikkou ingested the Girigiri gas to go insane so Isshuu Kasumi could kill him, but Ikkou eventually regains his sanity and refuses to obtain the Evil Will like that.
After joining forces with the Hurricangers and getting a job as a construction worker with Isshu, Ikkou decided to abandon his previous dream and decided the Gouraigers new mission is to support the Hurricanger from the darkness.
He develops a friendly rivalry with Yousuke Shiina later in the series as the second-in-command, as well as gain a mortal enemy in Third Spear, Manmaruba, who implanted a Space Scorpion egg in the man's body for using him to get into Universal Ninja Group Jakanja's ranks.
He attempted to have the egg removed from his body with Yuusaku Ramon's aid in secret, even from Isshu. However, Ramon could only hinder the hatching until Manmaruba's Mind Wave made it beyond Ramon's skills.
Though told a cure may be found in Tibet, Ikkou refused to leave and it nearly killed him as a result if it wasn't for Yousuke nearly killing himself to provide an antidote. Ikkou would later kill Manmaruba soon after the Fangerus crisis.
Years later, Ikkou fought alongside not only his own team, but every single Sentai ranger in existence, against the Empire of Zangyack when it attacked the Earth in the Great Legend War. After fighting against hundreds of Gormin and their Zgormin commanders. AkaRanger noticed the fleet moving towards them, he gathered all the Rangers together and gave them the order to sacrifice their powers to wipe out the first invasion's armada.