Xeones is a character from the ancient Greek historical novel "Gates of Fire" by Steven Pressfield. He serves as the narrator and a squire to a Spartan warrior, providing a unique perspective on the events leading up to the Battle of Thermopylae. In the story, Xeones recounts his experiences and observations of Spartan culture, warfare, and the valor of the soldiers. His narrative highlights themes of honor, sacrifice, and the harsh realities of battle, making him a crucial figure in understanding the significance of the legendary stand of the 300 Spartans.