He is Skid's best friend, the both of whom joyously/religiously celebrate Spooky Month at any given moment, constantly getting into misadventures involving serial killers, demons, eldritch monsters, possessed killer dolls, their bullies The Hatzgang, and the ire of several townsfolk, namely Kevin and his big sister Susie. He is the youngest child of the Wonder Family. He and Skid also have an uncanny habit of befriending dangerous individuals who inexplicably are friendly to them, like Frank and Eyes of the Universe. Pump is more cautious than Skid, but is also just as optimistic. Pump's gullibility also matches Skid's, yet his rare clever moments only seem to happen when his eyes turn cyan to warn others of upcoming danger. Just like Skid, Pump also enjoys Spooky Month, but despite his young age, it is possible that he has a dark-humored side, evidenced by him suggesting that he and Skid ignite a Happy Fella doll into flames to "see if it screams", and when he indirectly tells Moloch to snap his neck and kill himself. Pump is also caring too, This is shown when he got mad at the Happy Fella doll for getting him in trouble with his sister. He is shown to not hold grudges as well. In Tender Treats, Despite Susie refusing to go trick or treating with him, Pump still shared some of the candy he got with her. Pump also tried helping Kevin with his injured leg from the happy fella by putting a bubble band aid on his wound despite it falling off. His eye color changes to Cyan near supernatural things such as demons and revived cultist members

Some of the people close to Skid so far are his mother and Pump, but throughout the series he has made more "friends" such as Frank, Kevin, and The Eyes. Although it has not been specified how long Skid and Pump have known each other, it can be inferred that they have been very close friends for a long time, as they are always together causing mischief. Like a stereotypical child, Skid is cheerful, naïve, and very optimistic. He loves Spooky Month to the point where he insists it lasts year-round instead of limiting it to just October. However, despite his immense gullibility and inability to tell right from wrong, Skid can be a bit skeptical about certain people if he notices something odd about them, motivation-wise, this being shown in The Stars, where he caught two thieves robbing his house and skeptically asked what their intentions were. Skid is also shown to not be entirely brave, seen when he backs away from The Stranger showing genuine fear, calling the situation "scary" instead of "spooky". But Skid has also been obliviously seen putting his closest ones in danger, specifically Pump twice, and Lila, his mom, once. The first time in The Stars, Skid was able to see Pump clearly in Eyes of the Universe's eyes, yet he did nothing about Pump's hypnosis. The second time in Unwanted Guest, he visibly and audibly argued with Pump, who claimed Lila was about to get murdered by a demon, who Skid did not recognize due to said demon being in the body of an exterminator.

She is Skid's mother and is almost always in a situation of danger while the children have fun on the streets celebrating Spooky Month. Lila is a caring person and a very loving mother, to the point of telling her son that June is also Spooky Month just to make him and Pump happy.

He lives under the cultist house The Eyes appear as a giant creature who's darkviolet in color He has a big and wide mouth with broken teeth and has cyan eyes he also has more than two eyes on their head hence the name Eyes His body is seemingly able to change rapidly as after Skid and Pump first meet The Eyes long his neck almost disappears, leaving only the head and many legs He is friends with skid and pump

Age: 14-16 Susie seems to be far more respectful, kind, and coolheaded when not near Pump and Skid

Best friends: Ross, Robert. Age: 14-16 Seemingly because of his upbringing Roy is most commonly seen acting out of line and with immense disrespect. His rich parents have high standards for him and this causes him to act out of line whenever he is away from them, dressing and acting like a stereotypical bully While he will disrespect almost anyone

Best friends: Roy, Robert. Age: 14-16 Ross is defined by his relaxed nature He is very calm and laidback and doesn't seem to talk much unless he is directly spoken to He is introverted seems to enjoy being out of the spotlight

Best friends: Roy, Ross. Age: 14-16 Robert is defined by his energetic nature and big smile. He is often energetic, and is very prone to cheering whenever he sees something he or someone he cares about likes Robert does show other emotions though most notably fear when faced with the Eyes of the Universe and Bob Velseb (an eldritch horror and serial killer respectively)

Kevin is shown to have a dislike for his job likely due to all of the ways his life goes wrong when he's clocked in He is also sarcastic and very easily pushed into a state of panic as shown when John & Jack enter the store and begin to question him on the pack of sugar Pump left on the counter Kevin doesn't seem to be able to hold back sharp comments and this gets him into trouble as a result. He usually only talks when he feels the need to He also appears to like kids, just not Skid&Pump