It is the first to "talk" in the form of shouting attack techniques. Cosmo Vulcan and Bull Vulcan combine when the command "Fusion! Grand Cross!" is given. It is armed with the Solar Sword and its finishing attack to destroy monsters is the Aurora Plasma Return energized slash. Its other weapons and attacks are the Vul Shield which can spin like a propeller to chop up opponents, the Vul Tonfa, the Vul Hand grappling chain, Vulcan Sun, and the shoulder mounted Vulcan Cannons.

Cosmo Vulcan is a jet piloted by VulEagle, armed with twin missile launchers. It is stored in the Jaguar Vulcan's mouth. It forms Sun Vulcan Robo's head, upper arms, and body.

Bull Vulcan is a bulldozer-like vehicle with two cockpits; one for the left half and the other for the right half. Piloted by VulShark and VulPanther; it is armed with side mounted missile launchers, extendable front mounted bulldozer buckets, and top mounted crane arms equipped with capture chains. When stowed in the rear of the Jaguar Vulcan, Bull Vulcan is split into two halves which are then combined for deployment.