Halo Hounds are a creature that was created by the Goddess of creation to help Heal the corrupted would that her father made. There Halos suck up bad energy and turns in in to the life force of the Halo Hound. If a Pup is born With Out a halo then the pour thing will die.

When It come to The Rarity part of the Halo Hounds it Has to do with the number of tails and halos(Around Head Legs and Tails). No Mutation (Other than the eyes not matching the color of the halos) Will ever be counted as rare. Below is a chart to help you be able to tell what range you Halo Falls In to.