He is played by Andrew Pleavin.
Daxos is likely a Commander or King of Arcadia. He meets up with the Spartans when they are heading to the Hot gates (Thermopylae). Daxos questions Leonidas why he has so little soldiers. Leonidas responds by asking his Daxos men what is their profession the Arcadians answer with Potter, Sculptor and Blacksmith. Leonidas yells at his soldiers what is their profession, they all answer AHOU AHOU AHOU, Which is the Spartan battle cry for War and Death. Leonidas tells Daxos "See old Friend, I brought more Soldiers then you did" meaning Leonidas brought more Real soldiers rather then men who are taken without combat experience.