Super Jammin Male 156cm 50kg Likes: Chicken Dislikes: Mr. Kim Characteristics: An orphan living at Sseol-Geu Orphanage. He always carries a baseball bat. He is strong and a good fighter. He goes around punishing bad kids. He constantly shouts "Su-su-su Super Jammin!" like a catchphrase.

Phantom Jammin Male 150cm 50kg Likes: Stealing things Dislikes: Mr. Kim Characteristics: Steals as naturally as breathing. He loves thievery. He is very hyper, easily frightened, and extremely mischievous.

Lee Jun Male 156cm 50kg Likes: Unknown Dislikes: Mr. Kim Characteristics: A "half-orphan" (his father passed away). He is slightly timid but very playful.

Kim Ji-sung Male 168cm 54kg Likes: Kim So-yoon (as his sister) Dislikes: Mr. Kim (hates him with a passion) Characteristics: Has a younger sister named Kim So-yoon. He is a strong fighter and very powerful. He is protective of his sister and has a cold personality.

Kim So-yoon Female 160cm 48kg Likes: Kim Ji-sung (as her brother), friends at the orphanage Dislikes: Mr. Kim Characteristics: Kim Ji-sung's younger sister. She is timid and shy, but she has been known to point a fruit knife at Mr. Kim when pushed.

Han Chok-beop Male 170cm 57kg Likes: Chicken, Guest Dislikes: Mr. Kim (absolutely loathes him) Characteristics: A juvenile offender who has spent time in a detention center. He used to be a real piece of work but has since turned over a new leaf. He is somewhat cold and aloof.

Mr. Kim Male 160cm 89kg Likes: Females (especially Kim So-yoon) Dislikes: Males (especially Kim Ji-sung and Han Chok-beop) Characteristics: A predatory teacher who is obsessed with females. He despises males (especially Ji-sung and Chok-beop). He is very obese, has a mustache, and is balding with thinning hair. He has a large mole on his forehead. He likes Guest if they are female and hates them if they are male. He was kicked out of Sseol-Geu High School for making inappropriate comments to female students and teachers about their "smooth skin."

The Director Female 178cm 60kg Likes: The children Dislikes: Trouble-making, Mr. Kim Characteristics: Kind and warm-hearted. She often scolds Super Jammin because he causes so much trouble.