In the final season, Tiger Claw started to lead the Foot Clan and their new Foot Cultists into summoning the mystical dragonoid Kavaxas from the Netherworld with a special talisman. After gathering Shredder's helmet and heart from Tatsu's branch and Don Vizioso's group, Tiger Claw had Kavaxas revive Shredder as a sentient zombie. Zombie Shredder started to take Kavaxas as his second-in-command. During the fight against the Foot Clan, Fishface left after explaining the Foot Cultists' origin to the Turtles, a revived Rahzar fell into the Netherworld, and Kavaxas was forcefully dragged back into the Netherworld by Zombie Shredder who states that they belong dead. Afterwards, Tiger Claw calls a truce with the Turtles.