10 Doctor Who Villains You're Surprised Only Appeared Once
10. Fenric
Fenric and the Doctor have a long history with each other. First appearing in the Seventh Doctor classic 'The Curse of Fenric', he was the original evil from the dawn of time. An earlier incarnation of the Doctor and Fenric first met in 3rd century Constantinople, where the Doctor defeated the intelligence in a game of chess and imprisoned him in a flask.
From his prison, Fenric manipulated the Seventh Doctor's timeline in order to free himself from his prison. The Doctor and Ace eventually defeated Fenric once more, but the old evil played a big role in the Seventh Doctor's Big Finish series of audios. Fenric was intrinsically linked to the legendary Cartmel Masterplan that would suggest the Doctor was more than a Time Lord.
With that in mind, it wouldn't be beyond the realms of possibility for Fenric to have been defeated by Jo Martin's Fugitive Doctor in the employ of Division, or by another of the Timeless Doctors. Whichever Doctor defeated him first, it's surely time for another rematch. If only so that the Doctor's last important chess game wasn't that awful one from Nightmare in Silver. Justice for chess!