“Wow, Vault Dweller, you're going right for the juicy details. I had a family, but either they disowned me or I disowned them depending on who you believe. They could be dust now for all I care. As for romantic partners, I've had many and there's always room for more. But, sorry to dash your hopes and dreams, my friend. While I wouldn't mind shacking up with you occasionally, I don't think Meg would approve.”
Johnny was born before the Great War in a military family, and grew up near U.S. Army bases all around the nation because of his father's military service. Although his family did not approve, Johnny pursued his dreams of becoming an actor in New York City. This caused a rift between him and his parents, stating that either they disowned him, or he disowned them, "depending on who you believe." However, his career was ultimately a failure, describing himself as a "bum" when the bombs dropped in 2077. At an unknown point in time, he broke into the Federal Reserve in New York, although he was only caught because his crew bailed on him.
He was close friends with Hal Gleeson both before and after the War. They did jobs together and were partners. In Johnny's terminal, he mentions Hal is not only the "only real relationship I ever had" but probably the only "real" thing in general he has ever had.
Johnny became involved with Meg Groberg's raider group when he infiltrated the gang by acting like he belonged, blending in among other survivors. When Meg found out that he had simply slipped into the gang, she reacted positively and the two shared drinks. They eventually "shacked up," and continued a physical relationship with each other. He followed Meg until they settled at the Crater, helping establish the new headquarters in Appalachia. His skill set benefits the raiders' operations, as he specializes in infiltration and pulling cons, and everyone profits from keeping him around. He mentions Meg is not his boss, but rather, they share a mutually beneficial arrangement in which they share resources and rewards, but neither expects one from the other.
Now found in the Core, Johnny stands out among the other raiders because of the black suit that he wears. Talking to him will reveal that finding suits is easy, but keeping them clean is his secret. In recent times, Hal left Meg's crew. Hal thought him and Johnny would be better off on their own, but Johnny decided to stay with Meg. Hal did not approve of Johnny's relationship with Meg, and Johnny posits Hal may have been jealous. On their last job, Hal ripped Johnny off and took more than his fair share of the cut then lied about it. By the time Johnny found out, Hal had already left under the guise of not wanting to settle down at the Crater.
The Ol' Weston Shuffle: The Vault Dweller of Vault 76 must convince Johnny to join the heist on Vault 79. Although he is already on board, Johnny wants something in exchange. He asks the Dweller to pose as a slave so that they can infiltrate Sargento's gang at the Watoga Civic Center and free Hal Gleeson from slavery. To do this, Johnny invents the character of "Reginald P. Humphries," an English man who became stuck in Washington, D.C. when the airplanes stopped running. After the Dweller fights through their matches (or simply kills all of Sargento's gang) and breaks Hal Gleeson out of captivity, Johnny meets with the two of them. Although Hal was once Johnny's best friend, it is revealed that the true purpose of this mission was so that Johnny could kill Hal and tie up loose ends from when Hal attempted to betray him. Johnny believes that his relationship with Meg caused Hal to become jealous of him. However, Johnny later comes to regret killing Hal, remarking that he loved Hal like a brother.
Buried Treasure: Johnny is part of the Vault 79 heist team, and is tasked with disabling the security system. However, he accidentally triggers a sensor which detects him as an ex-convict, leading him to pause and ask the Vault Dweller for advice. If he is lied to and encouraged to proceed, he will be killed by laser turrets. If he is told to stop, he will survive, and will accompany as a temporary companion for the rest of the quest. Either way, he is unable to accomplish his task and an alternate plan must be used.
Secrets Revealed: If Johnny survives Buried Treasure, he will continue following the player character as a temporary companion. After dealing with the vault reactor and collecting the gold bullion, Johnny will attempt to betray the Vault Dweller, and must then be killed or convinced to stand down with Charisma 4+, then a Charisma 8+ check or by bringing up his previous betrayal of Hal. A further Charisma 12+ check can be used to encourage him to give some of his cut of the gold (50 bullion) to the Vault Dweller as an apology for the attempted betrayal when the raid is completed. At the end of the quest, after making the final choice of how to split the gold, Johnny can be talked to in the Gold Operations Center. If the deal with Meg was respected, he will be thankful and friendly. If the deal was broken, he will be disappointed and harsh.
If Johnny survives Buried Treasure and Secrets Revealed, he will return to his room in the Crater Core. He will occasionally offer some random chems or aid items, and can also be asked about his thoughts on the heist.
If he is killed during either quest, the password to his terminal in his room can be obtained from his body.
Johnny will mention that he does not mind "shacking up" with the player character, regardless of their gender, though he doubts that Meg would approve of such a relationship.
If the player decides to attack Johnny after his betrayal for the gold, Johnny comments in battle how he is annoyed at the Vault Dweller for ruining his suit due to how rare they are to find in the wasteland.
If Johnny is killed, Meg will ask the Vault Dweller what happened to him. The Vault Dweller may lie, claiming Johnny died to feral ghouls, which is what Johnny previously said he would cover up the Vault Dweller's death with. Meg is very upset by Johnny's death, mentioning she will need time to process it, wondering how sincere Johnny was and if he was just using her and the Raiders all along.
"Yeah, well, it was a mistake to bring you in on that job. I trusted you, and you couldn't pull off a simple con job. I don't know how I'm going to trust you on this vault heist. But, I'm a man of my word, and I told Meg I'd help you do it if you helped me, so here we are. Just don't fuck that up too."
Johnny speaking to Sargento during The Ol' Weston Shuffle
Johnny killing Hal Gleeson during The Ol' Weston Shuffle
↑Johnny Weston: "Wow, Vault Dweller, you're going right for the juicy details. I had a family, but either they disowned me or I disowned them depending on who you believe. They could be dust now for all I care. As for romantic partners... I've had many and there's always room for more.But, sorry to dash your hopes and dreams, my friend. While I wouldn't mind shacking up with you occasionally, I don't think Meg would approve." (Johnny Weston's dialogue)
↑Vault Dweller: "Where are you from originally?" Johnny Weston: "I don't like talking about it, but I know you'll keep it secret. My dad was military. I saw army bases all over the country as a kid. When the bombs dropped, I was a bum. A failed actor, living on the streets in New York City. My parents never approved of acting for all the reasons you'd expect from a family with strong military tradition. Anyway, that's the story I'm telling you. You can decide for yourself if it's true." (Johnny Weston's dialogue)
↑Johnny Weston: "When the bombs dropped, I was living in New York. Or maybe, Boston. Or coulda been Detroit, or LA. Maybe even England." (Johnny Weston's dialogue)
↑ 4.04.1Johnny Weston: "The story goes that I infiltrated the gang simply by acting the part. For weeks, everyone just assumed I belonged. But there's more to it. When Meg found out, she wasn't even mad. We had drinks, then shacked up. I trust you enough to say that Meg and I have a physical relationship. Beyond that, it just so happens my skill set benefits her whole operation. Now I stick around with her crew and everyone profits. I followed her around until we settled here. You know the whole business with Hal and all that. He never approved of my arrangement with Meg. I think it got him jealous." (Johnny Weston's dialogue)
↑Vault Dweller: "You're really going to do me in like you did Hal? How's that going for you?" Johnny Weston: "Damn it... That was the hardest thing I've ever had to do. Hal was my partner. My best friend. I loved him like... like a brother.But if I'm being honest, I wouldn't miss you at all. I might even miss you less, since you went and mentioned Hal." (Johnny Weston's dialogue)