Agatha Heggleby is Rebecca, Sophie and Hazel's ghost guardian. This motorcycle riding ghost is flamboyant, outrageous and just a little scatter-brained.
She has set up 'home' with her ghostly friends, Buddy, Sophus and Grendel, in the Ainsworth family graveyard. Agatha and the ghostly friends are always there for the sisters but sometimes their advice can be a little 'out of this world'