Pump could possibly dislike Roy, Ross and Robert for beating him and Skid up, but especially Roy for tricking the two of them into almost becoming victims of sexual assault. Pump and Lila are not biologically related, but Lila treats him like a member of the family nonetheless.

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'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. Pump is more cautious than Skid, but is also just as optimistic. His Winter outfit in Spooky Month 4 - Deadly Smiles consist of a light brown beanie with white fluff around it, and he wears a simple light brown coat over his costume. His head is wider than Skid's, and his eyes are more circular in comparison as well. He is short and chubby, slightly shorter than Skid in fact. Under his mask he has white skin, brown curly hair and a missing tooth. It could be possible, however, that the white undershirt is actually Pump's bare skin, and that the black shirt is too big for him. He also wears a heavily simplified version of what could possibly be a tuxedo, that consists of white gloves, black pants, black shoes, and a black V-neck shirt which seems to have a white undershirt beneath it.

The mask has a square bucktooth on the upper-left lip, and a light green stem on top. Pump wears an orange pumpkin mask that covers his entire head.

Scid and pump