A student at the Paper School. Female. A model student who is quite good at her studies. She is 15 years old. She is close with Abbie, Bubble, Lana, and Engel, and is currently dating Engel. She has white bobbed hair. She wears a white school uniform and shorts; everything except her shoes and pupils is white. She dislikes Oliver, Zip, and Edward. She has a kind personality.

A student at the Paper School. He has a kind and gentle personality. He wears black overalls over a white short-sleeved shirt. He has two feathers on the left side of his head. He wears black shoes. Male. He is close with Abbie, Lana, Bubble, and Claire, and is currently dating Claire. He dislikes Oliver, Zip, and Edward.

A student at the Paper School. Her face is made of bubbles. She wears a black skirt with a white short-sleeved shirt, long socks, and black shoes. There is a small yellow rubber duck on top of her head. She has a tail that is also made of fluffy bubbles. Female. She is close with Abbie, Lana, Engel, and Claire. She dislikes Oliver and is afraid he might try to eat her.

A student at the Paper School. Everything except her face, eyes, and mouth is gray. Her arms and hands are black. She wears gray sock puppets on both hands and seems to enjoy puppet shows. Female. She wears a gray short-sleeved shirt and gray pants. She is close with Claire, Engel, Bubble, and Abbie, and is currently dating Abbie. She keeps her hair tied up (she's pretty with it down, but pretty with it up too).

A student at the Paper School. Male, but his hair is on the longer side for a boy. He has something that looks like an apple stem on the crown of his head. He wears a black school uniform jacket over a white short-sleeved shirt and white shorts. He also wears a black tie. He has a fearful and timid personality. He is close with Claire, Engel, Bubble, and Lana, and is currently dating Lana. Because he is easily frightened, he often hides behind Lana.

A student at the Paper School. Male, but he has long hair that he keeps tied back. He has two black horns on his head that look like cat ears. He has the red text 'A+' written on the left side of his hair. He has slight sociopathic tendencies. He is close with Zip and Edward, and they go around bullying Engel, Claire, Abbie, Lana, and Bubble. He wears a black short-sleeved shirt and white shorts. His left arm has been replaced with a pencil. Surprisingly, he loves eating soap. Consequently, he has a desire to eat Bubble whenever he sees her (to such an extent that even his friends Zip and Edward are shocked by his soap-eating habits). Male.

A student at the Paper School. The right half of her hair is black. On the white left side of her hair, the text '2+2=8' is written. Female. She is close with Oliver and Edward and bullies Engel, Claire, Abbie, Lana, and Bubble. She has a tail that looks like a dinosaur tail. She wears a white skirt. She wears what looks like a scarf around her neck, decorated with various drawings (smiles, ships, clouds, etc.). She seems to like paper airplanes as she flies them often. She has what looks like small dragon wings on her back (she cannot fly). Oliver constantly teases her by saying she and Edward are a couple, which she hates. She has a younger brother named Chip.

A student at the Paper School. Male, but has long hair. He has two small horns on his head. Despite being male, he wears a black skirt. He has what looks like a demon tail. He is very interested in engineering and mechanics, so he builds his own robots. He wears glasses, which he keeps on his forehead except when he is building machines. He wears long black boots. He is friends with Oliver and Zip and bullies Abbie, Lana, Bubble, Claire, and Engel. He acts annoyed when Oliver calls him and Zip a couple, but he secretly likes it.

Small. A kindergartner. He carries a white fish decoration on his back that is larger than he is. Because he is still young, he speaks in a cute manner. He is Zip's younger brother. He is friendly with Oliver, Zip, Edward, Abbie, Lana, Bubble, Claire, and Engel.

A virus-like entity that has possessed the famous character Sonic. His body consists only of black and red. He has four arms; the arms are black, but the hands are red. The glow of his true form, Fatal Error, can be seen on his body. He has a strong psychopathic personality and takes great pleasure in killing. Male. The red parts are his shoes, torso, hands, and hair, while the black parts are the folded parts of his shoes, arms, neck, and pupils. Male. He is 5 meters tall. By killing others, he can create subordinates of the same color as his own corrupted form.