Frubb was part of Friar Skurpul's mole crew and was one of the moles that survived the collapse of the ground when they tried to rescue the mousemaid Spingo. He also helped Zaran the Black and Laird Bosie McScutta of Bowlaynee fall a sycamore tree that ultimately collapsed the cave of the Doomwytes by calculating how the tree was going to fall. Not to be confused with Frubbs Minor or Frudd.