Tiki serves as the enigmatic lieutenant to the primary antagonist Enchu, marked for capture by the Magical Law Association as a centuries-old adversary. His true nature is ambiguous, possibly a powerful spirit or an immortal human who mastered forbidden magical arts over time, making him a formidable threat.

He bears responsibility for orchestrating the devastating fire at the high-security Arcanum prison, enabling dangerous spirit escapes and widespread chaos. Tiki manipulates pivotal events from the shadows, employing psychologically calculated tactics. He deliberately engineered the death of Rio Kurotori's mother during a spirit attack, ensuring enforcers arrived too late, aiming to foster her resentment towards magical law practitioners and facilitate her alliance with Enchu.

Tiki exhibits a distinctively sadistic demeanor, reveling in destruction, psychological torment, and inflicting suffering. He actively attempts to eliminate Muhyo's group during confrontations, demonstrating personal malice and strategic commitment. His introduction of forbidden magical law techniques to Enchu catalyzed the latter's descent into antagonism, exploiting Enchu's initial feelings of inferiority toward Muhyo.

Physically, Tiki is characterized by his distinctive four-eyed mask and gloves bearing mystical markings, concealing his true appearance and contributing to his aura of mystery, aligning with his preference for anonymity and intimidation. Official sources classify him as non-human, though specific visual traits remain undefined.

Throughout the narrative, Tiki remains a persistent manipulative force without redemption. His motivations appear rooted in perpetuating chaos and undermining magical law enforcement structures. He operates primarily through proxies and orchestrated events rather than direct confrontation, emphasizing his strategic approach. The deeper origins of his immortality or spiritual nature remain unexplored.