Character from Prince of Thorns by Mark Lawrence
Named for the obvious reason — a Brother whose relationship with truth is adversarial and whose stories are the only entertainment on the road.
Liar tells stories. Some of them are true. Identifying which ones is the game. He is the Brothers' entertainer, their con artist, and their reminder that in a band of killers, the one who controls the narrative controls the group. Jorg appreciates him because Jorg understands the power of lies — he just prefers to use truth as a weapon when possible.
A man whose face was built for deception — expressive, shifting, never quite settling into a fixed expression. He looks like whatever he needs to look like in the moment, which is the skill that earned his name.