Bernard Tulle was a halfling and according to him, a mushrooms farmer working for the Zerrikanian Spice Company in Novigrad.
He participated in the Gwent tournament of the Passiflora using the Northern Realms deck. His skills in this particular card game were however quite ridiculous, but it sort of made sense: Bernard was not at all a simple spices merchant; indeed, he was a professional thief who entered the tournament just to steal the 9000 Crowns prize.