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Crackle Crackle!!
The Thunderflame Behemoth's body continued to stretch, its cells dividing and compressing frantically, as its muscles became more sculpted and bulging, filled with explosive strength.
Its neck became thick and powerful, and its skull slightly deformed to appear fiercer, with prominent brow bones and the black short horns on its head growing longer and sharper, resembling a mane.
As its body changed, the heavy black and red scale armor also kept expanding and deforming, becoming more angular and rising up in blade-like sharp grooves.
At the same time, from both claws and the joints of its legs, backwards-facing barbs grew, and on its shoulders, a row of heavy bone spurs emerged, with faint flames flickering within.
The dorsal fin, which had evolved from a row of sharp spikes to robust coral, became sharp again during this growth, yet thicker compared to the third evolution of the Sword Armor Beast.