Shell Turtle Beast Gamegeron is a monster in B-Fighter Kabuto.

Born from an Archelon fossil, the powder scraped from his shell was sold as a calcium supplement called "Bone-Health", but began to harden people's skin into bone. B-Fighters attacked Turtlegeron, but his shell was too hard to be cracked. Though the only flaw was his belly, Turtlegeron covered it. However, it was Kabuto's determination that finally shattered the monster's shell and enabled him to destroy Gamegeron.

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