Lightning Speed Gouraiger


 * Kabuto: "Facing the shadows, slicing the shadows…"
 * Kuwaga: "Facing the light, slicing the light!"
 * "Lightning Speed Gouraiger revealed!"

Lightning Speed Gouraiger (1, 5, 7-51) were originally the enemies of the Hurricaneger who join Jakanja despite having wiped out the Ikazuchi Way's Ninja Academy which left the Kasumi brothers as the only survivors.

History
The brothers obtained the forbidden Gouraiger system from their father, Ikki, a rogue ninja who abused them. Ikki went against the Ikazuchi Way's wishes to obtain the Evil Will after learning of it during his mission in Egypt and learned of the "Final Secret" at the time of a meteor shower. He went against his school's wishes by creating the Gouraiger system and making his sons kill each other to evoke it while making them believe that rage and hatred would only promote strength. Though they eventually allied themselves with the Hurricanegers the Kasumi brothers were unable to completely forsake their father's cruel teachings and have a jaded view on life. The two work as construction workers. They represent the Ikazuchi Heart embodying the Bonds of the Past.

Ikkou Kasumi

 * Ikkou Kasumi/Horned Ninja Kabuto Raiger is the older brother. His original goal was to raise Ikazuchi as the greatest Ninja school using it. Learning of the method his father intended Ikkou ingested Girigiri gas to go insane so Isshuu could kill him. Ikkou eventually regains his sanity and refuses to obtain the Evil Will like that ultimately deciding to abandon this goal and focus on his new goal of supporting the Hurricaneger. He develops a friendly rivalry with Yousuke later in the series as well as gaining a mortal enemy in Manmaruba (who implanted a Space Scorpion egg in the man's body for using him to get into Jakanja's ranks). He attempted to have the egg removed from his body with Ramon's aid a 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; only stopped by Yousuke nearly killed himself to provide an antidote. Ikkou would later kill Manmaruba soon after the Fangerus crisis. After transforming, Ikkou says "Crimson lightning. Horned Ninja Kabuto Raiger!".
 * Ninpou: Super Ninpou Illusion Kabuto, Ikazuchi Way Ninpou Kabuto Projection.

Isshuu Kasumi

 * Isshuu Kasumi/Fanged Ninja Kuwaga Raiger is the younger brother. He originally resented Ikazuchi for staying in the shadows for 500 years, idolizing his brother and respecting most of his decisions. But Isshuu took the fact they were not rebuilding their Ninja school personally until he found the resting place of his father's sword Kiraimaru. Desiring to rebuild the Ikazuchi School Isshuu used the blade with disastrous results. After learning to use the Kiraimaru in a way where his friends would not be harmed Isshuu decides to rebuild the school after Jakanja is defeated. He was later shown to have feelings for Nanami Nono. After transforming, Isshuu says "Azure thunderclap. Fanged Ninja Kuwaga Raiger!".
 * Ninpou: Super Ninpou Fang Lightning, Super Ninpou Position Change.