Born in the churning depths of primordial oceans before the continents fully formed, the Origin Leviathan is the first and greatest of all cryptids, a colossal sea serpent whose spawn gradually adapted to different environments across the globe. Ancient texts from Mesopotamia to Scandinavia describe its rare surfacings, with fragments of its massive scales and teeth becoming powerful artifacts that influenced the evolution of regional cryptid species through mysterious energies.

The Origin Leviathan possesses regenerative abilities that have granted it near-immortality, with sections of its body capable of developing into independent entities when separated, explaining the diverse cryptid species across regions. Its blood contains mutagenic properties that alter nearby lifeforms, while its scales can adapt to any environment, from deepest oceans to highest mountains. The creature can manipulate water currents and weather patterns, explaining its connection to flood myths and its ability to influence environments where its descendants evolved.

The Origin Leviathan remains largely dormant in the deepest ocean trenches, surfacing only once every few centuries, but its essence flows through all cryptids, connecting them in a supernatural ecosystem that transcends conventional evolution. It serves as both the progenitor and guardian of cryptid species, ensuring their continued survival through subtle influences on their environments and abilities, while challenging humans to acknowledge the mysterious forces that exist beyond scientific understanding.