The Persian King who demands Spartan submission. He personally leads his massive army, employs secret weapons, and transforms into a giant mech, accidentally causing Leonidas's death.
Their opposition drives the central military conflict.
Leonidas rejects Xerxes's demand for Spartan submission, refuses his bribe, and leads the Spartans against the Persian army.
Sonio becomes a casualty of Xerxes's invasion.
Sonio fights on the Spartan side during the battle against Xerxes's Persian forces and is killed during that conflict.
Dilio remains opposed to Xerxes after the first battle.
Dilio fights with Leonidas's Spartans against Xerxes's army, survives the battle, and later leads a larger Spartan force against the Persians.
She becomes Sparta's political opponent of Xerxes's campaign.
Margo rallies the Spartan council to support Leonidas's war against Xerxes after Traitoro's betrayal is exposed.
The Messenger communicates Xerxes's imperial demands.
The Messenger arrives in Sparta carrying Xerxes's demands for submission and serves as the representative of the Persian king's position.
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