10 of the Most Memorable Betrayals in Movies

9. Ephialtes €-  300

In this 2006 adaptation of Frank Miller's historically inspired comic-book series, King Leonidas of Sparta and his army of 300 go on a jolly romp around Greece, slaying Persians in typical Zack Snyder super slow motion. It is in the early stages of their defiant last stand at Thermopylae that Leonidas comes across the path of Ephialtes, the severely deformed son of a Spartan exile who wishes to fight alongside the 300 in order to redeem his Father's name.