Petyr Baelish
Lord Petyr Baelish, popularly called Littlefinger, was the Master of Coin on the small council under King Robert Baratheon and King Joffrey Baratheon. He was a skilled manipulator and 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.