This was created for Creature of the Week 206 at ConceptArt.org. "A goblin's best friend"
The Noggin Hopper
Noggin Hoppers are small frog-like creatures that love to dwell on the warm bald heads of goblins. When groups of goblins are together, the Noggin Hoppers will often jump from one head to the next. Goblins prize these creatures because they provide much needed company (the forest can get rather lonely while gathering herbs), and they eat the pesky insects that are attracted by a goblin's foul oder.
Further concept design for the Noggin Hopper here: [link]