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A multi-Doctor story featuring Three Doctors was an unproduced Doctor Who Magazine comic story by Grant Morrison in 1986.
Instead of two incarnations from his past, the Doctor (presumably the Sixth Doctor, who was the current Doctor in 1986) was going to meet two incarnations from his future. The story was rejected because one of the future incarnations was a woman.[1]
I came up with this idea where the Doctor meets two future versions of himself, a sort of 'Three Doctors' thing. I thought, 'I won't do two Doctors from the past, I'll do two from the future', to make it a bit different. One of them was a woman and they wouldn't let me do that at all. They said the readership wouldn't accept it. There was some big controversy.
Notes[]
- In 2017, Jodie Whittaker became the Thirteenth Doctor, the first woman to portray an official incarnation of the Doctor.