We meet this rude and smelly creature in Blackhope Scar when Finn described throwing his juggling balls at it in the tree at the bottom of Uncle Hugh’s garden in Tobermory (on the island of Mull off the west coast of Scotland) when Finn was just seven. Finn’s description was this:
It was bigger than a guinea pig but smaller than a cat. But it had hands and feet like a monkey, and brown scaly skin like a crocodile, and it had bits of sticks and grass and heather on its head instead of hair.
This was actually Finn’s first introduction to gomes, although Finn did not know it at the time. We will meet Stinky again in a later story in the series.