Duke was a hellhound who came from the Source to be Duchess Philippa Wharton's pet. The only known reference to him is one of the few surviving pages of Philippa's journal, where she indicates that they would take walks and hunt together.
- ^ Founder's journal page 4, written by Philippa Wharton, RuneScape. "I have a new pet freshly arrived from the Source. It is disguised enough that we can walk together on the surface. This is all happening right under their noses and it will be their downfall. I take such joy in going for walks with Duke - he's such a good boy. Not only walks, but we now hunt together. We grow bolder with each passing day..."