Martian karate

Martian Karate was a formidable martial art form known by the Doctor.


 * Presumably, it was developed by the Ice Warriors.

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. (DWN: Inferno)