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- "You don't understand. This isn't just about fire and wheat, This is personal."
Lagos the Archon was the leader of Arcadia, who supplied the Spartan army with the food they needed for the war by growing and shipping grain and wheat. Lagos was also a close friend with Spartan general Brasidas, supplying him and his men with food on one of their missions. 
Unlike other cultists, Lagos joined them unwillingly. The Cult wanted control of Arcadia, so they asked Lagos if he would join, but when he refused, The Cult kidnapped his wife and son, forcing him to work under their thumb. Luckily, the misthios, Kassandra, came was able to free his family. 
While Brasidas wants Kassandra to spare Lagos knowing he was blackmailed into joining the Cult, Myrrine wants Kassandra to kill him thinking that he deserves to ie because he is a cultist, no matter the circumstance. Based on Kassandra's actions in handling The Monger, Kassandra has the choice of killing him or sparing him. 
- Lagos is a name derived from the Greek word λαγῶς (lagos) meaning 'hare', and colloquially 'coward'.
- In the novel Lagos is killed by Myrrine and is the 36th of the 42 Cultists to die.