Male. Has a bit of a rude personality. Yellow hair, protruding rabbit-like front teeth, and square glasses. In a hate-relationship with Han Chokbeop. Very strong. Rank 1 at Sseol-Geu Elementary, 13 years old. Leader of Jamkatsuki.

Male. Red hair with yellow streaks. Typical 'Jammin' (bratty kid) personality. Active on a YouTube channel called 'Clumsy Jammin TV'. Rank 2 at Sseol-Geu Elementary, 13 years old.

Male. Magenta hair, chubby body. Rank 3 at Sseol-Geu Elementary, 13 years old.

Male. Mint hair. Always asks for a girl's phone number as soon as he sees her, but isn't obsessive. Rank 10 at Sseol-Geu Elementary, 13 years old.

Male. Yellow hair. Nicknamed Sakuranbo. Rank 4 at Sseol-Geu Elementary, 13 years old.

Nicknamed Fake Goku. A yellow wig with red tips. Rank 5 at Sseol-Geu Elementary, 13 years old. His real hair is purple under the wig.

Male. Yellow hair, has sticker tattoos on his arms. Rank 6 at Sseol-Geu Elementary, 13 years old.

Male. Brown hair. A kid who invested 10 million won of his mom's credit card into Pokemon bread. Rank 7 at Sseol-Geu Elementary, 13 years old.

Male. Wears a Pikachu costume. Rank 8 at Sseol-Geu Elementary. Loves cosplaying. His real name is Kim Jammin.

Male. Rank 9 at Sseol-Geu Elementary. The kid who poured Jeti chocolate powder into a swimming pool. Brown hair, Choco Boy.

Male. Known as Suwon Ma Dong-seok. One of the legends of Suwon, called so because he literally looks like the actor Ma Dong-seok. Has a bulky, heavy build.

Male. Yellow hair, very skinny body. Known as Suwon Rascal. Born in 2004.

Female. Known as Suwon Jang Wonyoung. Promotes herself as Suwon's Jang Wonyoung on TikTok. Long hair that is brown on top and gradients into yellow. Failed to get into college.

Female. Characterized by wearing a black mask on her chin. Known as Suwon Witch. Long hair that is brown on top and gradients into yellow. Failed to get into college. Lee Hayeon's older sister.

Male. Bright red hair, wolf-like features, black jersey. In a hate-relationship with Sunwoo Chokbeop. Occasionally commits crimes because he's a juvenile offender. Personality: Rude and cold. 13 years old.

Male. Known as Red-Haired Shang-Seungho. It is said that Conqueror's Haki overflows from him just by looking at his red hair.

Male. Known as Sseol-Geu City's Cha Eun-woo. Extremely handsome. There are rumors he was street-casted by SM, YG, and JYP. Legend says he got asked for his number 14 times in one day at Hongdae in elementary school. A formidable fighter.

Female. Younger sister of the Suwon Witch. Dark blue hair, turquoise eyes. Tsundere.