Lambert was one of the younger witchers from Kaer Morhen. Known for his biting tongue, he was often rude in conversation. He was particularly rude towards Triss Merigold, addressing her only by her last name, which irritated the sorceress greatly. He does not have much use for politics, a trait common to most witchers. He helped train Ciri in the art of combat. He was described as being at the same age as Coën.