@warsofasoiaf set the bar real high on this one, so I had to have a bit of a think about it.
The character I would create was formerly known as Septon Lewys, before that Lewys Flowers the Bastard of the Hightower, who would become in rapid succession Most Devout Lewys and then the High Septon known to history as “the High Spider” and to his enemies “that cunning bastard.”
An adroit political manipulator who mastered the Great Game through a dazzling series of alliances and betrayals, a diplomat who brought all of the Kings south of the Neck together for the “Great Council of Eternal Peace” (the only time in recorded history where the monarchs of the South would meet in one place), a holy man who spent his reign in armor or Dornish silks rather than the vestments of his office, the most corrupt and debauched High Septon in history but also a brilliant theologian who ended the schism of the Black Sept, a man who aimed at nothing less than the unification of Westeros and yet lived to see all his work undone.
But you’ll have to wait until later for the full story.