They have served the dark will of Persian kings for 500 years. Eyes as dark as night, teeth filed to fangs - soulless. The personal guard to King Xerxes himself. The Persian warrior elite. The deadliest fighting force in all of Asia. The Immortals. The god-king has betrayed a fatal flaw: hubris. Easy to taunt, easy to trick. Before wounds and weariness have taken their toll, the mad king throws the best he has at us. Xerxes has taken the bait. "Immortals" - we put their name to the test.