Infinity Doctor

This incarnation of the Doctor was a member of the High Council on Gallifrey. He had been married to Patience, whom he had lost years ago. He was born into the House of Lungbarrow. He had earnt the ire of a number of his peers, mostly because of his iconoclastic and eccentric nature, but also because of his socially progressive mindset. Through years of arguments and cowboy diplomacy the Doctor managed to get the Rutans and the Sontarans to sit down and discuss a ceasefire. Sadly, this met with stonewalling from both sides and opposition from the Time Lord Council necessitating the Doctor to take more radical actions in order to force a peace. He easily forms friendships and maintains them despite his anarchical nature (one friend includes the Magistrate of the Citadel, the senior most lawman on Gallifrey). The Doctor teaches at the Academy, and inspires his students to think for themselves (again earning the ire of his colleagues).

Finally, the Doctor is also a figure mentioned in a number of prophesies. One such prophesy, as maintained as law by the Watch, is that after certain events have come to pass, the Doctor is to be killed for the greater good of Gallifrey. (PDA: The Infinity Doctors)