Gender: Male Age: Unknown Race: Yaya Occupation: Monster Hunter Weapon: Pistol His pupils are shaped like a minus sign (-). He is one of the two protagonists of the Monster Encyclopedia. He is either best friends or brothers with Merong White. He finds work annoying but does his job diligently. He is admired by Merong Pink.

Gender: Male Age: Unknown Race: Yaya Occupation: Monster Hunter Weapon: Intelligence His pupils are shaped like a plus sign (+). He is one of the two protagonists of the Monster Encyclopedia. He is either best friends or brothers with Merong Black. He is the only one who can interpret Violet's gestures. He is admired by Merong Mint.

Gender: Female Age: Unknown Race: Yaya Occupation: Monster Hunter Weapon: Boxing Gloves Her pupils are shaped like a division sign (÷). She is close with Merong White and Merong Black. She is taciturn and expresses her thoughts through body language. She is very strong.

Gender: Female Race: Yaya Occupation: Monster Hunter Her pupils are shaped like a greater-than sign (>). She admires Merong Black and is his fan. She is close with Merong Mint. Weapon: "Romantic Bazooka" Part of the Merong Cutie Duo.

Gender: Male Race: Yaya Occupation: Monster Hunter His pupils are shaped like a less-than sign (<). He admires Merong White and is his fan. He is close with Merong Pink. Weapon: "Romantic Bazooka!" Part of the Merong Cutie Duo.

Gender: Female (Presumed) Race: Yaya Occupation: Monster Hunter Her pupils are shaped like a multiplication sign (×). She has white hair. Her personality is the complete opposite of Violet's. Her weapon is a guitar, but she attacks with noise rather than physical force, so her teammates have to wear earplugs.

Gender: Male Race: Yaya Occupation: Scientist (Presumed) He wears glasses with spiral patterns and has white hair. He carries a hand puppet that looks exactly like him. His pupils are shaped like a decimal point.