Bunhead was the goblin bodyguard that guarded Edaline during her stay in Lumenaria during the fifth book, Lodestar. Her real name is unknown therefore Sophie called her Bunhead, because her hair was tied into a tight bun on top of her head. She was specially trained to work at Lumenaria.
When the Neverseen knocked down Lumenaria, the goblin bodyguards were called down to the dungeons to contain them. None returned.