Pestilence

Pestilence is a werewolf, and a founding member, and medic, of The Horsemen clan.

History
Pestilence is a human cursed with lycanthropy, forced to stay in his werewolf form, or else he will be overwhelmed by disease and die instantly.

In the Sixth Age, Death summoned Pestilence to help in destroying the chaotic rift, despite being on bad terms, due to Pestilence attacking a killing an adventurer before their time. Pestilence gave adventurers vials of bile, which were used to destroy Seekers above the Rift.