Littlefinger, also known as Petyr Baelish, is a fictional character from the A Song of Ice and Fire series by George R.R. Martin and the television adaptation, Game of Thrones. He is a cunning and ambitious man who rises from humble beginnings as a minor lord to become a powerful player in the political landscape of the Seven Kingdoms. Littlefinger is known for his manipulative nature and his ability to play various factions against each other. He has a deep obsession with Catelyn Stark and later Sansa Stark, using his charm and intelligence to gain influence and control. His actions often lead to chaos and conflict, making him a key figure in the series' intricate power struggles.