The War Chief
Who? Another former friend of The Doctor’s from their time on Gallifrey, The War Chief became a renegade Time Lord after getting screwed over by the ruling Time Lords and after that betrayal vowed to get revenge on them no matter what. The War Chief went about his revenge scheme by aligning with a group named The War Lords by coming up with a scheme to kidnap warriors from many different planets/times, brainwash them and have them fight until only the best of the bloodthirsty best would be left as the ultimate army. The Doctor foiled that plan of course mostly due to The War Chief double crossing his partners in crime.
The War Chief also served as an adviser to Adolf Hitler which should demonstrate just how much of a scum-bag the guy is. It was during his time hanging out with the Nazis that The War Chief was seemingly killed for good but if The Doctor can play fast and loose with the regeneration rules of Time Lords i don’t see why the War Chief couldn’t do the same. And considering the times we live in the War Chief would be a perfect foil for The Doctor to face and give the writers of the show lots of themes to play with.
Casting Suggestions: Paterson Joseph (THE LEFTOVERS)/Stephen Moyer (TRUE BLOOD)/Dominic West (THE WIRE)
Crustula 
Omega scared the $*~£ out of me as a kid, Now with the Time Lords back there is a good chance they will find a few baddies, The Rani (Kate O’Mara sadly missed) and oh so many more
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I loved Omega and his megalomania. He was a really great baddie.
And the Rani was great because she was played with such awesome 80s high camp by Kate O’Mara. it was like Alexis from Dynasty was revealed to be an evil Time Lady.
Thanks for commenting, btw!
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You do realise that the monk the warcheif and the master are the same time lord.
But as for the rani and omega should return.
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Really? That is news to me.
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