The brother of Beckett, Frankie was left at Foundation while Beckett ran off with Edwin's gang, leaving him resentful and bitter towards his brother. However, while living with the Settlers in Foundation, Frankie met Ayla, and the pair became romantically involved. Despite these attachments, his resentment at being left behind eventually led him to voluntarily join the Blood Eagles to follow in his brother's footsteps. Nevertheless, the Blood Eagles took him to the Vantage, where he was tortured by the Eye, and forced to eat spiked Buffout and drink something full of eyeballs.
After giving in to the Eagles' demands, he became a member, effectively brainwashed by the drugs. When the previous holder of the role of "The Claw" died, his second-to-none crazed nature made him a natural fit for the role, and he was put in charge of Watoga Underground as one of the Blood Eagles' three leaders.
After the attack on the Underground by a Vault Dweller and Beckett, they enter the Claw's throne room, only for a shocked Beckett to realize that the Claw was his brother the whole time. Frankie mistakenly believes Beckett still cares about becoming The Claw, and thinks that Beckett came to kill him so he could become the new Claw. Frankie tells Beckett to kill him and finish the job. At that time, the Dweller can either convince Beckett to kill his brother or talk sense into him.
If killed, Beckett sends his brother's corpse to Ronny to be buried. Beckett will eventually inform Frankie's girlfriend, Ayla, about the ordeal, sending her some caps to try to smooth things over.
If Frankie is spared, Beckett sends his brother to Ronny's camp to be cured of his chem addiction, eventually becoming a wandering merchant who occasionally visits his brother at the Vault Dweller's C.A.M.P. Beckett is sure Frankie will visit Ayla at Foundation at some point.
Thicker Than Water: Frankie can be saved or killed depending on the encouragement of the player character. Frankie can never be attacked or killed by the player character directly; instead, Beckett will always shoot his brother. Before shooting, Beckett apologizes to Frankie while Frankie claims the Claw will be reborn. Frankie's body will not have any items.
When spared, Beckett mentions Frankie has become a travelling merchant who sometimes visits the C.A.M.P. However, in the final game, he does not appear at the player's C.A.M.P. In the cut encounter, Frankie would visit Beckett at the player's camp if Beckett's bar was present. However, this encounter was canceled, as is evidenced by both a deleted and an unused version of Frankie in the game files.[Non-canon 1] Despite this, some players claimed he has visited although there is no current proof.
↑Vault Dweller: "Did you find out how Frankie got mixed up with the Blood Eagles?" Beckett: "Yeah, and I had it all wrong at the beginning. Turns out Frankie had been gone from Foundation longer than I was led to believe. And, he actually joined the Eagles voluntarily. Of course, he did it to follow in my footsteps... so, I guess that one's on me. As he started taking the Buffout overdoses and buying into the Eagles' bullshit, it blew his mind and he started climbing the ranks. After the previous Claw got wiped out, and it was clear Frankie was one of the craziest in the gang at the time, he filled the spot." (Beckett's dialogue)
↑Vault Dweller: "What about Frankie's girlfriend?" Beckett: "Well, good thing is, she hadn't been kidnapped by the Blood Eagles like I'd suspected. She had actually gone into hiding. I sent her word about Frankie's death... and I kicked a few caps her way to try and smooth things over. Don't look at me like that. I might have been a raider for years, but I'm not a heartless asshole." (Beckett's dialogue)
↑Vault Dweller: "You sure it's smart leaving Frankie at a raider camp?" Beckett: "Yeah, it's cool. Ronny said she'll kick his butt out of her camp the moment Frankie clears his head. Helping her out has really paid off. Thanks again for convincing her to back our plays." (Beckett's dialogue)
↑Vault Dweller: "How's Frankie doing?" Beckett: "He's still a little bit messed up from all the chems, but he's slowly getting back to normal. I actually convinced him he needed to find something to do... something to keep him busy while he recovers, so he's become a traveling merchant. I think it'll do him a lot of good. Gives him a chance to collect his thoughts and shake off all the crap the Eagles stuffed in his head. He stops by here from time-to-time. Maybe you'll run into him soon." (Beckett's dialogue)
↑Vault Dweller: "What about Frankie's girlfriend?" Beckett: "Well, good thing is, she hadn't been kidnapped by the Blood Eagles like I suspected. She had actually gone into hiding. I sent her word that Frankie's okay. Can't exactly let her visit Ronny's camp... it isn't safe for someone not in the gang. Once he's back on his feet, I'm sure he'll return to visit her at Foundation." (Beckett's dialogue)