Basch was a former general who served in the Dalmascan army. During the Archadian invasion on the Royal City, he soon found out that their beloved king had sold their empire to the Archadians. When the news reached his ears, he was enrage and killed both the king and Vaan’s older brother Reks, who was the only witness of the crime. After the news reached the people, Basch was entitled a traitor by the people of Dalmasca.
During the game, Basch explains what truly happens the night of the invasion. True be told, that his twin brother was the murderer and now has become one of the Archadian Judges. Because of his brother death’s, Basch eagerly takes over his brother’s place as an Archadian Judge and the protector of Lord Larsa.
Basch joins the party when Vaan and co. are trying to escape from Nabreus Deadlands. They break his cage and set him free from his dreaded prison. He stays in the party in hope to restore peace in the kingdom he couldn’t protect.
In the sequel Revenant Wings, though a Judge on false pretenses, Basch intends to protect the peace he and the others obtained when he journeyed with Larsa to encounter the Judge of Wings. He also appears in Itadaki Street Portable.