In the past, Saber was an ace soldier within the Rigelian army, but he fell into a trap devised by noblemen who scorned his common upbringing, and he lost one of his eyes. Betrayed by an ally who he considered a friend, he challenged them to a duel and emerged victorious. However, his opponent died and because private duels carry the death penalty in the Rigelian army, he was forced to flee to Zofia and become a mercenary.
While he was drinking at a tavern around Novis Greatport, he accepts Celica's request to protect her group during their seaborne journey to Mila Temple after she offers her Golden Dagger as payment. Ever since his employment, Saber more or less acts as Celica's advisor, albeit an unconventional one. Arriving at Zofia Castle, he points out that she does not seem as impressed as Mae and Boey. After Celica accepts her heritage, Saber swears fealty to her and becomes just as loyal as Mae and Boey. When Celica announces her intention to invade Rigel to retrieve Mila, Saber assures her that he has her back. At Duma's temple, he leads Celica's army in an attempt to rescue her.
After the war, Jesse asked for his co-operation after recognizing his abilities. Together, the two faced the challenges of creating a mercenary nation head on, while he marries an unknown woman.