Prince Kellen is a level 33 rare mob satyr found in Desolace. Like the other hatefury he drops Vial of Hatefury Blood, which is used for the warlock quest Components for the Enchanted Gold Bloodrobe (4), Hatefury Claw, and Hatefury Horn, which are used for the alliance quest Reagents for Reclaimers Inc., respectively.
Known to be a very easy kill for a low level 30s person.