Fire Dragon connects behind Super Jet Falcon. Dozer Dragon and Turbo Dragon's bodies would link under Jet Falcon's wings. Dozer Dragon's treads and buckets would connect on Jet Falcon's sides, forming the front legs. Turbo Dragon's fan would attach on top of Super Jet Falcon and Heli Falcon's blades would connect to its wing. FInally, Jet Falcon's nose would extend to form Great Wyvern's head.
Great Wyvern GX is Rescue Fire's largest vehicle combination. It's made from Great Wyvern, X-Dragon, and GaiaLeon. Originally, this combination wasn't able to be formed due to Tatsuya's lack of faith. But the combination was achieved when he gained the Blue Orb of Faith. Great Wyver GX's final rescue is Great Hurricane, firing multiple blasts that form into one ray that freezes the target and extinguish the Extreme Fires. Then it's followed by a Great Wyvern attack. All the five Rescue Dashes are launched.
Wyvern Cannon is the combination of Super Jet Falcon, Turbo Dragon, and Dozer Dragon. The formation is much the same, excluding Fire Dragon. The combination is used as a weapon by Rescue King (X-Dragon and Fire Dragon). It shoots a spiked round projectile at its target in one shot.