This giant monster was originally Chokan's jet that she used to search for the two remaining Jetman but Radiguet interferes with the mission and plants a Dimensional Bug on the jet, starting its transformation into a monster. Though it tried to devour Chokan inside the cockpit, she managed to break free and parachute off the jet. It later went against the Jet Hawk in a dogfight before it grabs Gai Yuuki to use as a hostage. But once Gai is freed and saved, the Fighter crashes and assume full monster form, able to fire orbs from its mouth. However, Red Hawk manages to destroy Fighter Jigen by shooting at the exposed gas pipe.