Merooro is an agent of the Bureau of Regulation, the organization tasked with maintaining law and order throughout the Labyrinth, the vast underground world where humanity resides. He is characterized by a calm and unflappable demeanor, rarely showing signs of distress or surprise even in the face of dangerous or chaotic situations. Beyond his duties as a law enforcement official, Merooro possesses a deep passion for preserving old knowledge for future generations, demonstrating a strong interest in subjects such as history and nature. His role in the story is primarily that of an authoritative figure who enforces the regulations of the underground society, though his respect for knowledge and the past also drives his actions. His relationship with the protagonists, Memempu and Gagumber, is defined by his professional capacity as a Bureau agent, though his specific interactions with them are not detailed. No information is available regarding his personal background before becoming an agent, his key relationships beyond his professional role, his character development throughout the series, or any notable abilities he may possess.