Personality varies greatly by individual. Generally, Gugugaga-a gets depressed, sulks, or pouts easily, but their personality changes significantly depending on their environment. Friendly toward humans and highly curious. They can only speak the Gugugaga language. To a Gugugaga, loneliness is poison. Hobbies include gaming and running errands. They love meat. They understand the Gugugaga language but can only speak in it.

Possesses leadership qualities but is clumsy, careless, curious, and marches to the beat of their own drum. Understands Japanese and follows rules. Aware of the Narrator's existence. Hobbies include gaming and giving instructions. Favorite food is salmon. Understands the Gugugaga language but can only speak in it. Despite their leadership role, they are unable to maintain order and are surprisingly weak. They can only speak the Gugugaga language.

Physically weak but very proud. Highly proactive and stubborn. If their pride is wounded, they sulk or cry loudly. Tends to appear suddenly. Hobbies include startling others and gaming. Favorite food is ramen. They can only speak the Gugugaga language and understand it, but cannot speak any other tongue.