The Duke is a merchant and vendor in Resident Evil Village.
An obese and mysterious figure, he sells items, weapons and upgrades to the player. The Duke also buys treasures and items, and will cook meals in return for the needed ingredients. The Duke helps Ethan Winters traverse the titular village and helps him recover Rose's body parts from the Four Lords. After Ethan is mortally injured by Mother Miranda, the Duke recovers his body and takes him to the ritual site to confront her.
Like the Merchant from Resident Evil 4, the Duke's past and history remains mysterious, though files indicate that he sells objects and provisions to the entire village, including forbidden items. The Duke also appears to relocate without being detected and set up shop within three of the Four Lords' territory (except House Beneviento because Ethan's weapons had been taken).
When Ethan returns to the ceremonial site after killing Donna Beneviento and Salvatore Moreau, he can be seen observing a Miss Madalina doll (a treasure he founded) and a jar of a Cadou Parasite Ethan found at Moreau Reservoir.