Petyr Baelish

Lord Petyr Baelish, popularly called Littlefinger, is a former Master of Coin on the Small Council under King Robert Baratheon I and King Joffrey Baratheon I. Through his manipulation of Lord Eddard Stark, Baelish helped begin the War of the Five Kings. Succeeding in aiding in the alliance between House Lannister and House Tyrell which led to the defeat of Stannis Baratheon during the Battle of the Blackwater, Stannis was awarded with Harrenhal and the title of Lord of Harrenhal. Lord Baelish would later aid Lady Olenna Tyrell in poisoning and murdering King Joffrey during his wedding to Lady Margaery Tyrell, he escaped with Lady Sansa Stark from King's Landing, having framed Lord Tyrion Lannister for the murder. Baelish and Sansa soon made their way to Vale. After marrying Lady Lysa Tully, widow of Lord Jon Arryn of the Vale, and her subsequent death at his hand, he became the Lord Protector of the Vale. Because of his relationship with her, Baelish was able to heavily influence Lysa's son Robin Arryn, the new Lord Paramount of the Vale.

He is a skilled manipulator, having used his ownership of brothels in King's Landing to both accrue intelligence on political rivals and acquire vast wealth. Baelish's spy network is eclipsed only by that of his arch-rival, Varys.