Rassilon

Rassilon was the founder of Time Lord civilisation and perhaps the single greatest figure of Gallifreyan history. He was generally considered the first Time Lord, though some believed that distinction belonged to his compatriot Omega. Most of Time Lord society hailed him as a hero. However, some contended that Rassilon was a corrupt megalomaniac who tried to murder his friend Omega and stole his invention to build Time Lord society. During the Last Great Time War, he returned to lead the Time Lords.