The Third Doctor uses Venusian karate to defend himself. (COMIC: The Celluloid Midas)
Karate was a form of martial arts.
Space Security Service agents were trained in dakaro, a kind of karate which used pressure to cause spine dislocation. (COMIC: Sara Kingdom: Space Security Agent)
Jo Grant claimed that she was "pretty nifty at karate" and that she once rendered Sgt. Benton unconscious. (AUDIO: Ghost in the Machine)
Stuart Dale did karate at school. (AUDIO: The Blood Furnace)
Sarah Jane Smith knew Venusian karate, (TV: A Girl's Best Friend) as did the Doctor. They employed it in their third, (COMIC: The Celluloid Midas) fifth, (PROSE: First Born) sixth, (AUDIO: Last of the Cybermen) and twelfth incarnations. (COMIC: Terrorformer)
The Third Doctor also knew Martian karate, which he tried using on the Primords after Venusian aikido failed, to no avail. (PROSE: Inferno)
