Male. Circumcised. Always playing pranks. His personality shifts to serious mode if he sees someone bullying his friends. Carries a metal bat. Uses the catchphrase "Su-su-su-Super Jammin~". Wears a purple jacket and gray pants. Friends with Phantom Thief Jammin, Won Bin, Kim Ji-seong, Kim So-yun, Kim Hye-yun, Lee Jun, and Guest. Engages in insult battles on Discord. 5th grader. Energetic. Orphan living at the orphanage. Calls the Director "Director Grandma." Speaks informally to adults. No parents. Height: 130cm.

Male. Friends with Super Jammin, Kim Ji-seong, Kim So-yun, Lee Jun, Won Bin, Kim Hye-yun, and Guest. Pink hair, white magician's hat, white T-shirt, red tie, and white pants. Pranks a lot and steals often. If he gets knocked out, he gets right back up saying, "Stealing is a phantom thief's virtue~☆". 5th grader. Energetic. Orphan. No parents. Height: 130cm.

Male. Light navy hair, green short-sleeved shirt, white shorts. Friends with the whole gang. Handsome. Voice is slightly quiet. Pranks a lot. Owner of the insult battle server. 5th grader. A "half-orphan" (has a mother but no father). Energetic. Lives at the orphanage. Height: 130cm.

Male. Obsessed with girls. Wears a propeller hat. Pranks a lot. Has a large nose and nostrils. Not very good-looking. 5th grader. Friends with the whole gang. Yellow heart print T-shirt, orange pants. Has the ability to fart on command. Lives at the orphanage. Energetic. Height: 130cm.

Male. Sharp and timid. 9th grader (Middle school 3rd year). Takes care of his younger sister So-yun and is a tsundere. White long-sleeved shirt, black long pants. His expression darkens and he beats up anyone who bullies So-yun. Handsome. Orphan. Lives at the orphanage. No parents. Height: 148cm.

Female. Timid. Close with Elanzo and Kim Hye-yun. Kim Ji-seong's biological younger sister. Hides behind Ji-seong when scared or embarrassed. Long hair with a white headband. Crimson tie with a red and white top, short black skirt. Has a psycho side. Orphan. Lives at the orphanage. Pretty. No parents. Height: 137cm.

Female. Looks a bit like a Moai statue. Beats up anyone who teases her. When angry, she says, "Want your spine snapped?". Pink short-sleeved shirt, brown bob cut. Close with Kim So-yun. Surprisingly strong. Lives at the orphanage. 5th grader. Energetic. Height: 130cm.

Male. The youngest. Purple ponytail. Blue T-shirt with yellow sleeves. 7 years old. Kindergartener. Pranks a lot. Cute, energetic, and a crybaby. No parents. Height: 121cm.

Female. Director of the orphanage. Cherishes the children. Red glasses. Plus-sized. Light brown long-sleeved shirt. Hair color is between brown and pink. Kind, but gets angry if the kids don't listen. Terrible at cooking. Height: 153cm.

Female. Pretty. Maid. Has a shark tail with "Full Power" written in Japanese on it. Haughty. If asked to touch her tail, she usually says, "You want to touch it? No," but occasionally says, "Fine." Slightly timid. Hair is black on the outside and red on the inside. Weapon: Giant sword. Shouts in embarrassment if her tail is touched. Friends with Kim So-yun. Her shark tail is quite large. 18 years old. Goes to the bathroom often; ignores people who tease her for it. Surprisingly good at fighting. Loves playing in the water. Very beautiful. Red eyes. No parents. Height: 169cm.