Greil is the father of Ike and Mist and the founder of the Greil Mercenaries. He was once known as General Gawain, one of Daein's 'Four Riders'. For a time, he and Elena lived peacefully in Gallia. During this time, they had two children, Ike and Mist. Greil also met Titania, who had been sent by Crimea to study in an officer exchange program.