| Giant mutant mole people | |
|---|---|
 | |
| Gender | 1 Male and 1 Female |
| Animal | Mole |
| Cartoon debut | "Arthur's Lost Library Book" |
Two giant mutant mole people appear in "Arthur's Lost Library Book". Buster theorized that the mole people stole Arthur's library book, but Arthur disregarded the idea. Right beneath their feet, two mole people were listening in on them with a hearing machine. They both denied having the book.