The Daleks have been the Doctor's enemy since 1963.
The Cybermen appeared in 1966 and returned four times in 2006.
The Ood are a species of strange looking monsters with tentacles on the lower part of their faces. They live on the planet Horsehead Nebula.
The Empress of Racnoss is a mix between human and spider. Check out all those eyes!
And look at these sharp teeth! The werewolf appeared in the episode called Tooth and Claw which featured Queen Victoria.
The Autons are living plastic aliens and they kicked off the revived Doctor Who show in 2005 with Christopher Ecclestone playing the Doctor.
Yikes! It's the very scary Beast. Run for cover.
Chloe's dad comes to life in Fear Her - the episode which takes place during the time of the 2012 Olympics.
The Clockwork Droids appear in The Girl In The Fireplace. Fancy costumes hide their mechanical workings.
The Empty Child introduced fear to London in 1941 asking for his mummy.