Nickname: Green Pig Age: 15 (9th Grade) Height: 176cm Weight: 82kg Gender: Male Likes: Delicious food, teasing Amy Dislikes: Studying, dieting Features: Amy's older brother, very overweight, and quite ugly.

Nickname: Tooth Monster Age: 12 (6th Grade) Height: 160cm Weight: 58kg Gender: Female Likes: Taking selfies, practicing idol dances, ramen Dislikes: Euddeum's teasing, dictation tests, studying Features: Has large teeth and is Euddeum's younger sister. Often considered somewhat ugly.

Nickname: Piggy-sy Age: 12 (6th Grade) Height: 175cm Weight: 85kg Gender: Female Likes: Practicing idol dances, eating, Han Euddeum, Common Friends Dislikes: Leaving food behind, cooperating with Jang Min-cheol Features: Amy's best friend who is ugly and fat. The channel she films with Amy is called 'Common Friends'.

Nickname: Jang Min-snow Age: 15 (9th Grade) Height: 163cm Weight: 55kg Gender: Male Likes: Games, Han Euddeum, Toy Boy, Amy(?) Dislikes: Studying, Common Friends Features: Very skinny and ugly. The name of the channel he runs with Han Euddeum is 'Toy Boy'!

Nickname: Thumbelina Age: 6 years old Gender: Female Likes: Common Siblings, people the Common Siblings know Dislikes: Strangers Features: A Maltese-Bichon mix, very cute, and a dog. The Common Siblings' pet.

Nickname: Ahn Sseup (also his real name) Age: 16 (10th Grade) Height: 178cm Weight: 75kg Gender: Male Likes: People who listen to him, ramen Dislikes: Common Siblings Features: Although he's a teenager, he has a thick beard and wears fake tattoos. He is also ugly.