Flame, once revered as the ancient world’s undefeated champion, earned glory by safeguarding humanity alongside the Six Mythic Beasts. His legend spread through sprawling murals, and he secured sanctuary in the Mythic Beasts’ paradise, the Sacred Garden. His era faced collapse when Tempest, a rival battler, corrupted three Mythic Beasts to seize global dominion. Flame’s victory over Tempest in a cataclysmic duel came at a cost: both forces fell into an ages-long slumber, their absence unleashing natural calamities and spiraling despair across the forsaken world.

Resurrected centuries later as Kaiser Gray, Flame returned warped by conviction that unchecked power demanded ruthless control to "save" humanity from itself. His visage darkened with obsidian armor, a maroon cloak, and a searing flame sigil across his left eye. Deploying lieutenant Task Landau, he assessed BeyRaiderz battlers’ prowess and reclaimed the slumbering Mythic Beasts. Uniting all six, he awakened the BeyRaiderz Samurai Ifrit—a blazing artifact symbolizing his reborn authority.

In his final gambit, Kaiser Gray unmasked his true identity to the heroes, now bent on purging resistance. He struck down former ally Armes Navy, only to face Sho Tenma in a duel that shattered his ambitions. Though defeated, his tragic arc lingered—a hero turned tyrant, consumed by the very corruption he sought to eradicate.

His legacy intertwined with Rachel and Jimmy Cruz, Tempest’s descendants striving to atone for their ancestor’s sins. Their journey mirrored Flame’s duality: a savior turned oppressor, embodying power’s perilous allure and the eternal clash between guardianship and domination.