The Twelfth Doctor is the twelfth incarnation of the Time Lord known as the Doctor. This article is about the version that plays in Twelfth Doctor Adventures. He regenerated on Trenzalore, and became "regeneration number thirteen", and the first of a new cycle. Because of the survival of Gallifrey, this incarnation didn't feel guilty, and became a much darker person. He often questioned his own goodness. He did have a very caring personality too, however. This article has been marked as incomplete. Please await for more.