Engine Gattai Seikuu-O

"Engine Fusion - Mission Start! SeiKuu-O Tune up! Go-on!"

Engine Gattai SeiKuu-O (炎神合体セイクウオー), known as the "Sky Punching King of the Heavens" (Sora o Seisuru Tenki no O), is formed when Engine Toripter, Jetras and Jum-bowhale combine.

Attacks are Toripcutter (Toripukatta), Jetras Boomerang (Jettorasu Bumeran), Jetori Turbulence (Jettori Tabyuransu), Seikuu Sonic (Seiku Sonikku) and its finisher is Seikuu Impulse (Seiku Inparusu).

With Engine Gunpherd, SeiKuu-O becomes SeiKuu-O Gunpherd (Seikuo Ganpado), Toripter's turrets and the Gunpherd Gun in its Guntori Gunfire (Gantori Ganfaiya).