Not much is known about Pugster's personality except he is likely a bit of an oddball as normal child behaviour is unusual for him. He also likely has the same dark sense of humour as his father as he and Thursday got given tickets to see a mausoleum.
He, Thursday and Uncle Blister were out on a walk when their neighbour, a witch, cursed him and Thursday into being normal and he wanted to be an accountant when he grew up. However, he likely returned to his usual personality when Suspicia did what was needed to break the spell: calculated all the numbers from one to a hundred.
- His age is unknown, but he is likely older than one because he can talk but younger than eighteen as he is referred to as a "kid".
- It is unknown what he looks like.
- He could be the nephew or great-nephew of Uncle Blister.
- His mother could be Suspicia.
- His surname is unknown but it could be "Adding" as his father said "We're the Adding Family", but Lopez could also have meant they were a family that added.