The Fallout franchise, despite taking place across various locales and time periods in post-apocalyptic America, is no stranger to characters from previous entries reappearing in subsequent installments, including Fallout 4. The most recent single-player entry in the franchise is no exception, with characters from Fallout 3, such as the Nuka-Cola-obsessed Sierra Petrovita and a now-adult Brotherhood of Steel scion Arthur Maxson encountered by 4s Sole Survivor during their journey through the Wasteland.