Martian karate
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Martian Karate was a formidable martial art form known by the Third Doctor.
- Presumably, it was developed by the Ice Warriors or the Gandorans.
When he was attacked by Primords, the Doctor attempted to stop them using Venusian aikido. When this didn't work, he then moved onto the Martian Karate, but neither method was able to stop the Primords. (PROSE: Inferno)