Origin
Pak Urr is a Green Martian and part of the Warhoons.
Major Story Arcs
Pak Urr despised both the Tharks and the Red Martians, and so he wanted to access a certain weapon which was powerful and large enough to be capable of destroying Helium and Thark. He plotted to overthrow Wah Krr, the leader of the Warhoons, as he deemed him as unfit as leader. With the help of three Warhoons, Dejah Thoris hoped to stop him before it was too late.