Shy and easily frightened, but very kind. If Hachiware doesn't notice danger, Chiikawa will cry to alert them. He carries a pink bear pochette and uses a pink sasumata for weeding/extermination. He holds a Level 5 weeding license. He has a round, white appearance with large circular eyes. He can only speak in exclamations like "Wa...!", "U...", or "Ung...!". Occasionally, he makes baby-like babbling sounds like "No, no." He often communicates through gestures and movements. Though he gets scared easily, he finds courage for the sake of his friends. He is a hamster-like small creature and a friend to Hachiware and Usagi.

Gentle, kind, and timid like Chiikawa, but very curious. Sometimes he doesn't realize he's in danger. He lives in a cave because he's poor and uses a cardboard box as a table. He uses a blue sasumata and holds a Level 5 weeding license. He is a cat-like creature characterized by the blue pattern on the top of his head. He can speak normally. He seems to understand and translate what Usagi or Chiikawa are saying. He has a polite and friendly way of speaking, saying things like "Huck! I ended up crying..." or mentioning pink things. He loves playing the guitar and taking photos, and he is very positive. He is a cat-like small creature and a friend to Chiikawa and Usagi.

An administrator who looks after the village residents. He wears gray armor and a pink bear pochette. He is diligent and follows principles, but shows a kind side to the residents, acting like a friendly adult. He sometimes goes camping with other Armor guys, like Labor Armor or Ramen Armor, and brings lunch boxes.

The Rank 1 exterminator. He looks serious but has a warm heart. He takes Hachiware and Chiikawa as his apprentices. He uses a sword, and because of his high rank, his face is marked on the sword's hilt. He has a weakness for desserts; his expression softens and he looks happy when eating them. He is always seen with his sword. He can speak. He can't handle bitter things, is bad at games, and can't stand the cold bath at the bathhouse, showing a vulnerable side. He is wealthy enough to own a car. He secretly sings in his car, but he is a terrible singer. He is a sea otter small creature.

A bold and selfish flying squirrel. He has a cute appearance with a fluffy tail and large eyes. He can speak. He cries to get attention from others and occasionally steals food. He often talks about how cute he is and hangs around the labor registration desks where many small creatures gather. He is a flying squirrel small creature.

Energetic and powerful, he ignores rules and acts freely. He has a high-tension, unpredictable personality. He ignores whatever Momonga says and just goes his way. He holds a Level 3 weeding license. His weapon is a staff. It has a face mark on it, but it's just a crude drawing he made himself with a 3D pen. He doesn't seem to have a home and travels everywhere, but he always returns to where Chiikawa and Hachiware are. He only makes sounds like "Urarara!", "Pururu~", "Pururururu!", "Haa?", or "Una~ Purity~". He sometimes uses his whole body to communicate as if using sign language. He is a rabbit-like small creature and a friend to Hachiware and Chiikawa.

Kind and friendly. He works part-time at the ramen shop 'Rourou'. He has a Super Part-time Job license and is close with Kurimanju. He has a bright and cute voice. He calls Ramen Armor 'Master' and works at the Rourou shop. He is a shisa/tiger-like small creature.

A small creature who was friends with Chiikawa a few days ago. However, after transforming into a Chimera, he became cruel and mischievous. He toys with or eats the small creatures who come to exterminate him. He puts them at ease with cute dances and songs before suddenly attacking. He makes beast-like sounds.

An adult-like character who enjoys alcohol and snacks. A small friend with a hairstyle resembling a chestnut. He makes a satisfied "Khaa~!" sound whenever he drinks something or has alcohol. He doesn't talk much but looks after his friends by sharing his snacks. He has a drinking license. When suffering from a hangover, he recovers by eating hangover cures or drinking from the river that flows with miso soup. He also goes "Khaa~!" when drinking miso soup. He is an otter-like small creature.

A timid and kind bookstore owner. A pink friend wearing a headband shaped like crab claws. She can move the crab headband freely. She has sharp teeth. She communicates through gestures and sounds like "Uh...!", "Hehe", "Fufu", "Uaaa...!", or "Hua..!". She is broad-minded enough to tolerate Momonga's pranks and acts like an angel, stopping Momonga from doing dangerous things and giving him food. She takes care of Momonga and spends her daily life with him. She invites Momonga to her bookstore, cooks for him, and reads to him when he asks.