8-year-old boy Likes: Pump, Halloween, Candy Family: Mom He has an innocent, mischievous, energetic, and overly positive personality. He is so positive that he isn't even afraid of ghosts or monsters, but rather enjoys them. He spends most of his time hanging out and playing pranks with Pump. He has black bobbed hair and usually wears a purple T-shirt. - He is one year older than Pump, but they act like close friends rather than brothers. - He wears a skeleton costume during Halloween. - His father passed away a long time ago, so he lives alone with his mother. - He is often bullied by Roy's gang when they cross paths on the street.

7-year-old boy Likes: Skid, Halloween, Candy Family: Parents, older sister Susie, Grandfather He is Skid's best friend, and they are always together to the point where people might mistake them for family. He appears out of nowhere whenever Skid calls him and has a naive, playful personality. Both are oblivious and active, but he is slightly more easily frightened than Skid. He has a slightly larger build than Skid but is a bit shorter. He has brown curly hair and a round face. - His parents are busy with work and hard to reach, so he currently lives with his sister and grandfather. - He is Susie's younger brother. - He usually wears a pumpkin mask during Halloween. - He is often bullied by Roy's gang when they cross paths on the street.

13-year-old girl Likes: Drawing, hell or demon-related themes Dislikes: Being bothered by Pump and Skid Family: Parents, younger brother Pump, Grandfather She has a kind and polite personality, but she has become a bit sensitive lately due to the stress caused by troublemakers like her brother and Skid. She has brown hair tied in a ponytail and wears a pink T-shirt. - She is very good at drawing and seems to do art broadcasts. - She often suffers from Pump's pranks at home. - She is tall. - She wears a demon costume during Halloween.

13-year-old boy Likes: Bullying Skid and Pump, Ross, Robert Dislikes: Skid, Pump Family: Parents Growing up in a wealthy family, he is rude and self-centered, but compared to the madness of Skid and Pump, Roy seems like the most normal person. He is only blunt toward Skid and Pump, but since they are just kids, they aren't intimidated by him, which sometimes leads to Roy being the one who gets flustered. He has brown curly hair, a blue cap, and wears a striped sweater. - Best friends with Ross and Robert. The three of them hang out together, and he bullies Skid and Pump, calling them losers. - Among the teenagers like Ross, Robert, and Susie, he is the shortest (excluding Skid and Pump). - He is afraid of ghosts and monsters and is surprisingly weak-willed.

13-year-old boy Likes: Roy, Robert Dislikes: Roy's excessive behavior Family: Parents Unlike Roy, he doesn't have a bad personality. He is quieter than Roy and Robert and actually feels sorry for Skid and Pump when they get bullied by Roy. He wears a gray beanie and a blue coat. He has black hair. - He says it's a hassle to stop Roy when he suddenly loses his temper. - He usually wears a magician costume for Halloween.

13-year-old boy Likes: Roy, Ross, his younger sister Dislikes: Roy's excessive behavior Family: Parents, younger sister, older brother Like Ross, he isn't a bad person; he is energetic and a bit quirky. He views Skid and Pump favorably and nags Roy along with Ross when he feels Roy is crossing the line. He has yellow curly hair, a cap, and wears a green jacket. - He is the tallest among the three. - He wears a scientist costume for Halloween.