In the TV series, he has the appearance of a star-nosed mole, a species native to North America. This conflicts to the book series since most of the fauna are chiefly native to the British Isles (with the exception of animals like monitor lizards, beavers and sables). In addition to this, it is never mentioned in the book whether or not Foremole was a star-nosed mole, although it is quite unlikely that he was. All moles in the book series are depicted as European moles.
Foremole often curses "Owd 'Arry", (Old Harry) an old British name for the devil.