Kim Riha is friends with Daengdaengi. He seems a bit strange and reckless, but he's relatively kind-hearted. Because he isn't conventionally attractive, he isn't popular with the girls.

He is quite sweet and kind. He is friends with Kim Riha and RatWolf, and was childhood friends with Geum Suji. He ends up treating Ggomi well because she acts so cute. He has average looks—neither handsome nor ugly—but girls strangely flock to him constantly.

RatWolf is friends with Kim Riha and Daengdaengi. He is rough and reckless, but has a slightly kind side despite his plain looks. He falls for Kim Ggomi because of her cute act.

A truly beautiful girl from a family beyond wealthy—she's 'diamond spoon' status. She has a rocky relationship with Cha Byeori, yet they remain best friends. She has a crush on Daengdaengi. She is always accompanied by two bodyguards. She hates Kim Ggomi for mocking her by calling her a 'Hulk.'

A girl with a bit of a hot temper and a self-centered streak, yet she's a subtle tsundere. She is best friends with Geum Suji, but they have become rivals as they both crush on Daengdaengi. She hates Kim Ggomi for mocking her by calling her a 'King Kong.'

Kim Ggomi. She acts cute constantly and is a total 'fox.' She acts all aegyo around the boys but looks down on the girls. She is short and looks innocent, but she's a bully on the inside. Boys ♡♡

The Teacher. He wears glasses and is very strict.