Sleet came first to join his master's human life when the owner was a young boy. The hellhound, then as a puppy, came as a wolf/ husky mix with thick black fur and eyes golden like the paths of Heaven.
Stuck in a mortal cnaine's body, the dog passed. Of course, he died protecting his master, but such was fate regardless. Later on in life, however, the hellhound was back. This time he entered his (humanly) young adult owner's life as a black and white husky puppy with royal blue eyes named Ice Berg. He saw his owner through courtship and marriage and the beginnings of fatherhood.
But IceBerg was another body unable to stay around for long. The spirit dog returned to his still living owner once more. This time he came as an angel-white husky with eyesthe very pale blue as is displayed by Hell frozen over. He saw the children out of the house and his owner to the next stage of life.
And in death the owner would no longer have to worry about his dog struggling to come along, for all three forms of the canine would be there as one. Each head visible and in shard control of the body they all knew.