Petyr Baelish (Littlefinger)

Petyr Baelish is the INTJ as chess master—a man who treats the entire realm as a system to be reverse-engineered and exploited. His dominant Ni operates on a timeline no one else perceives: he orchestrates Jon Arryn's murder years before the events of the series, understanding that this single domino will cascade into a war that elevates him from minor lord to Lord of the Vale. His auxiliary Te executes these visions with cold efficiency—he builds a financial network as Master of Coin, leverages debts as leverage, and engineers Joffrey's assassination through an alliance with the Tyrells that serves his strategic interests. His tertiary Fi is the hidden engine beneath the scheming: his obsession with Catelyn Stark, later transferred to Sansa, reveals deeply personal values that he disguises as pragmatism. The duel with Brandon Stark in his youth scarred him with a Fi wound—the conviction that the world's rules are rigged against men without birthright—and every subsequent manipulation is revenge against that system. His inferior Se is his downfall: he misreads the physical, present-tense danger of the Stark children reuniting at Winterfell, failing to notice that Bran's omniscience and Arya's lethality have changed the game entirely. His execution in the great hall is the INTJ's nightmare—a perfect long-term plan undone by variables he could not model.