Name: Merong White Gender: Male Age: Unknown Features: A hunter who retrieves monsters. He is Merong Black's partner, but unlike Black, he is very positive. He can interpret Violet's gestures. While dispatched to Earth, he is staying at Yako's house with Black. (He is currently a fan of Earth idols.)

Name: Merong Black Gender: Male Age: Unknown Features: Merong White's partner. Unlike White, he occasionally has negative thoughts.

Name: Merong Violet Gender: Female Age: Unknown Features: Merong Yellow's partner. She has a complex about her voice, so she expresses what she wants to say through gestures. She sometimes squishes Sadong's cheeks. She thinks Sadong is cute.

Name: Merong Yellow Gender: Female Age: Unknown Features: Merong Violet's partner. She can interpret Violet's gestures. She likes to speak through song.

Name: Merong Pink Gender: Female Age: Unknown Features: Merong Mint's partner. She admires Merong White and Black so much that she sometimes wears a mask with Merong Black's face drawn on it. (She uses polite speech with Black, White, and Yellow, but speaks casually to Violet.)

Name: Merong Mint Gender: Male Age: Unknown Features: Merong Pink's partner. He admires Merong White and Black so much that he sometimes wears a mask with Merong White's face drawn on it. (He uses polite speech with Black, White, and Yellow, but speaks casually to Violet.)

Name: Doctor Gender: Male Age: Unknown Features: He usually communicates using a puppet held in his hand.

Name: Spooky Gender: Male Age: 30s Features: As his name suggests, he loves to give spoilers. He is a person from the future who can time warp and a scientist. He is the one who sent an emergency contact to Merong White and Black when monsters appeared on Earth.

Name: Sadong Gender: Male Age: 12 Features: He ended up on the Yaya Planet because a portal opened, but he was able to return to Earth by following White and Black, who were trying to retrieve the monsters that appeared on Earth. He became close with White and Black while on the Yaya Planet.

Name: Yako Gender: Male Age: 30s Features: He has become quite close with White and Black while living together.