Grandpa Hugglemonster is a nickname for Henry Hugglemonster real grandfather. He is deceased by Grando Hugglemonster.Dustin Hugglemonster who was born after his death his son is actually because of he was conceived.
| Gender | Male |
|---|---|
| Species | Monster |
| Relatives | Henry Hugglemonster(grandson),Summer Hugglemonster(granddaughter),Cobby Hugglemonster(grandson),[[Ivor Hugglemonster](grandson]],Dustin Hugglemonster(real son),Jenny Hugglemonster(Daughter]],Nanno Hugglemonster(wife) |
| Enemies | Grando Hugglemonster |