Ernest Penfold is DM's assistant/best friend. Often mistaken for a mole (presumably on account of his spectacles), Penfold is actually a hamster.[N 3] He is codenamed the Jigsaw because, at the first sign of danger, he falls to pieces.
↑He has a severe allergy to them, which causes them to swell up.[1]
↑Co-creator Brian Cosgrove has confirmed this on at least one occasion.[2] Penfold describes himself as a hamster in Danger at C Level, the second episode of the rebooted series.