The Post-Apocalyptic Wastelands were ruled by Roxen and Nexor Cox… until she arrived. They couldn’t confront her, so they accepted the terms she proposed to let them stay in her newly acquired territory. Now the brothers work for The Baroness in exchange for her protection.
Special skill name is a portmanteau of Valhalla, of Norse mythology, and the Vauxhall Firenza, a vehicle whose front end influenced the Ford Falcon XB, used in the Mad Max films.