Colonel William Stuart was the cold-hearted ex-US Special Forces commander turned traitor and terrorist who led the takeover of Dulles International Airport to free South American drug lord General Ramon Esperanza. He is the main antagonist of Die Hard 2
Colonel Stuart is almost unanimously regarded as the craziest of all the Die Hard terrorists. He would practice martial arts moves nude every morning furiously and would eventually crash an entire plane full of civilians just to prove a point. Stuart is the coldest and most unpredictable of all the antagonists in the whole series, aside from Hans Gruber.