Born from the collective unconscious fears of early humans, the Abyssal Trickster emerged from primordial darkness before recorded history, feeding on the terror and wonder that accompanied humanity's first encounters with the unknown. It gained sentience through millennia of absorbing the essence of other cryptids, eventually becoming a self-aware entity that moves freely between the deepest oceans, highest mountains, and most isolated forests where cryptids dwell.

The Abyssal Trickster exists in a perpetual state of transformation, able to assume the form of any cryptid while retaining a singular identifying feature—eyes that reflect the absolute darkness of the cosmic abyss. It possesses an ancient intelligence that comprehends all languages and can communicate telepathically with both cryptids and sensitive humans. Though physically powerful in any form it takes, the Trickster's true strength lies in its encyclopedic knowledge of cryptid weaknesses, behaviors, and hiding places, making it both the ultimate cryptid hunter and their most formidable protector.

The Abyssal Trickster serves as both catalyst and witness to cryptid phenomena worldwide, sometimes testing those who seek cryptids by appearing as their quarry while other times protecting endangered cryptid species by misleading hunters or revealing false information. Its presence throughout the series explains how cryptid knowledge transfers between isolated cultures and why certain cryptid behaviors remain consistent across different species, as all have been influenced by the Trickster's ancient wisdom.