Individual Characteristics: A cat-like specimen with a blue head (hachiware pattern). An extremely rare individual in this sector possessing advanced verbal communication functions. Personality: Extremely positive and social. Frequently uses the deductive syntax "Does that mean...!?" and approaches unknown phenomena with curiosity. Primary Duties: Weeding (Level 5 license holder) and extermination duties. Has optimized a cave as a residence.

Individual Characteristics: A yellow rabbit-like specimen. Verbal output is limited to "Yaha," "Ura," etc., but situational judgment and physical abilities are off the charts. Personality: Unpredictable (appears and disappears unexpectedly). Always maintains high energy; it is suggested that the fear gene may be missing. Primary Duties: Weeding (Level 3 license holder) and advanced extermination duties. An individual with very high solo survival capabilities.

Individual Characteristics: A high-ranking sea otter-like specimen with a cross-shaped scar on the forehead. Wears a cape. Personality: Calm, collected, and stoic. Addressed as "Master" by Chiikawa, Hachiware, and others, functioning as a mentor. A bug (specification) has been confirmed where defense protocols are temporarily deactivated and facial muscles relax upon consuming sweets. Primary Duties: Ranked 1st in extermination. One of the highest combat powers in this sector.

Individual Characteristics: A giant mermaid-type composite lifeform inhabiting Mermaid Island. Personality: Possesses high intelligence and mental/physical attack triggers using unique music (singing). Has a cold logical mindset that executes thorough retaliatory measures against those (islanders) who harm their community (mermaids). Primary Duties: Governance of the island sector, and predation/elimination of illegal individuals.

Identification Name: Secondhand Bookstore (Common name: Kanichan) Individual Characteristics: A pink specimen always wearing a crab-shaped headband. Personality: Extremely introverted and gentle. A protocol of special tolerance (or deep affection) is activated, resulting in a high probability of accepting and accompanying Momonga's unreasonable demands and actions. Primary Duties: Management of a street stall (secondhand bookstore). Collection and accumulation of knowledge data.

Individual Characteristics: A giant Chimera (large mutant). Data remains showing it was once a "Chiikawa race (individual with a characteristic forehead)." Personality: Feels the joy of being liberated from the fear of the weak by obtaining a powerful body. Coexists with the innocence of playing with small lifeforms like frogs and the cruelty of ruthlessly trampling former members of its own race. Primary Duties: Extermination target, and wandering the wasteland.

Individual Characteristics: A lifeform wearing the skin of a white flying squirrel. Personality: Extremely self-centered and a bundle of desire for validation. Sets being "doted on" as the top priority task. A strong inconsistency (traces of data tampering) has been detected, suggesting the internal mental data belongs to a "Large & Strong" monster that once stole a Chiikawa's body. Primary Duties: Taunting other individuals and making demands (refusal to work).

Individual Characteristics: A specimen with a head resembling a chestnut manju. Personality: A philosophical character who devotes all resources to consuming alcohol and suitable snacks. Frequently produces an exhaust-like output of "Haaah." Primary Duties: Drinking (performing life work including hangover prevention). Occasionally activates support protocols such as treating Chiikawa and others to meals.

Individual Characteristics: A specimen modeled after a Shisa. Personality: A very studious and polite honor student. Calls the owner of the ramen shop "Rō" (Armor-san) "Master" and considers contributing to the system (shop) as the ultimate mission. Primary Duties: Super Part-timer (holder of an extremely difficult qualification). Customer service and cooking assistance at "Rō."

Identification Name: Armor-san (General term) Individual Characteristics: A group of high-ranking humanoid specimens covered in metal plate armor. They function as independent system management AIs or terminals of a governing organization, fundamentally different from the Chiikawa race. Personality: Basic protocol is "Neutral/Management." Generally kind to the Chiikawa race, supporting their safety and independence, but a limiter is set as an organizational regulation: "Do not become too friendly with the Chiikawa race (principle of non-interference)." Primary Duties: Maintenance of public order in this sector, infrastructure management, control of economic activities, and providing labor opportunities (rewards) to the Chiikawa race.