Hero

Father Octavian told the Eleventh Doctor that River Song killed a "good man" who was "a hero to many." Unbeknownst to the Doctor at the time, Octavian was referring to him. (TV: Flesh and Stone)

The Twelfth Doctor once exclaimed that he was not a hero, but rather an "idiot with a box and a screwdriver". (TV: Death in Heaven) When trying to convince Amy Pond to lose her faith in him, in order to protect her from the Minotaur, the Eleventh Doctor claimed not to be a hero, saying "it's time we saw each other as we really are". (TV: The God Complex)

No matter how many planets he had saved, the Twelfth Doctor was acutely aware that he had also caused so much damage. He regretted, for instance, leading the Mandragora Helix to Italy, and the Family of Blood to England. In those times, the Doctor was left to clean up messes he had been responsible for. (AUDIO: Dead Media)

The Twelfth Doctor, toward the end of his life, was not sure there even was such a thing as heroes, or even villains. He pointed out that even the Cybermen started out with good intentions. Instead, the Doctor believed that people simply did their best in the circumstances, and that most people tried to be good. (AUDIO: Dead Media)