Nothing is known about Duke's life prior to or as the outbreak began.
Duke was at the Sanctuary with the other Saviors getting ready for the final assault when he and a group of Saviors were dispatched by Negan to set up a roadblock, unaware he was being used as a decoy.
While setting up a roadblock, Duke and his men are attacked by Rick and the Militia and all are killed. Duke surrenders to Morgan, however Morgan stabs him with his staff and then slices his throat, killing him. Shortly after, Morgan sees a hallucination of Jared, who proceeds to mock him and the way he killed Duke until Jesus snaps him out of it.
- Negan (Caused)
Negan deliberately sends Duke along with a large group of Saviors to set up a roadblock and Walkers on a road and be sacrificed as part of his plan to lead Rick and the Militia into a trap.
The Militia attacks Duke and his men posted on the roadside. After his fellow group members are killed, Duke surrenders to Morgan however Morgan impales him with his staff and then slices his throat, killing him.
This list shows the victims Duke has killed:
- Possibly numerous counts of zombies