I think I rambled about something similar before?
But FAHC Gavin with mafia ties and little cousin (by blood or close enough they might as well be?) Fiona.
Random series of events lands Gavin in Los Santos where he falls in with the Fakes. Everything’s nice and normal for a while until word on the street is someone put a hit out on Gavin/hired some big time hitman to deal with him.
Which to be fair isn’t a rare occurrence because Gavin?
But whoever is after him now is impressively good - nearly kills him a few times to the point Ryan’s got this grudging respect them, right?
He’s not thrilled about someone out to kill Gavin (again) becasue that’s his Gavin - mutual pining or established relationship, idk - but he can still appreciate their skill and suchlike, you know?
Meanwhile Gavin goes off on his own for a bit - the crew is super not a fan of that, what with the everything going on - and comes back with Fiona.
Fearless, doesn’t give a fuck Fiona who is super unimpressed with the Vagabond and other such dorkfaces in the crew? And they’re all ??? becasue what even, and then, uh.
Shenanigans in which Gavin mentions he and Fiona kind of grew up together and that she’s totes trustworthy? But also Fiona being suspcious as hell, dropping little hints here and there about the mafia and being part of it and does Gavin just not know????
Fiona kind of terrifying the others becasue while she’s oddball Fiona at times, she’s also an incredbile shot and fond of knives and other deadly things too?
Also bullies Gavin (and select others in the crew) about like whoah and no one can get a straight answer as how Gavin and Fiona know one another. (The two of them take turns making up increasingy wild and improbable stories to fuck with the others.)
But then Gavin (and Fiona?) get grabbed and everyone else is !!! because oh, no, danger!!1!
Rush to the rescue only to find Gavin and Fiona and a lot of dead bodies and then get the story about how Fiona was meant to bea Gavin’s bodyguard and all when he took over for his grandfather, but things didn’t go quite as planned?
Gavin going to Los Santos for “business” and getting tangle up with the Fakes to the point he ~quit the mafia (Fiona rolling her eyes because yeah, that was a Thing) and everyone else just,
”Wait. Is that even a thing?Can you just quit the mafia?”
Which, kind of sort of no? But Gavin made quite the case for it at the time.
(True Love and also threats to burn the whol thing to the ground if they went after his idiot boyfriend and crew, but he was more than willing to look after the mafia’s interests in Los Santos so long as they don’t conflict with the is crew and so on.)
Fiona being slated to take over instead, but not being keen on it herself, and then the thing with someone wanting Gavin dead. Having to do with his mafia ties and lines of inheritance and Fiona eithe rbeing sent to protect Gavon or deciding to do so herself and then other shenanigans?
Everyone being “Wait, what?” becuase the thing about Gavin’s ties to the mafia and leaving all that behind for Ryan and the idiot crew and also why did none of this come up before?
To which Gavin is just, “Uh I thought you knew?”
He’s never brought itt up, but he also hasn’t deliberately tried to hide it, you know?
But because he’s so Gavin no one considered he had ties to the mafia even though it’s the only reason for some of the reactions people have had to him in the past?
They just thought oh, the speaking Italian thing is due his his grandfather he mentions a fair bit. And he worked with Burnie and the Roosters for a bit there before Geoff wooed him to Los Santos, so that’s probably why some people were oh, shit when they ran into him and so on.
Fiona joining the crew becasuse of course she does. (Official reason they give to the mafia side is to act as Gavin’s bodyguard/oversee mafia’s interests in Los Santos and such, but really it’s for crew shenanigans.
Also to terrorize the others/Ryan and wreak havoc with Gavin for shits and giggles.