Rob McElhenney Wants to Give the ‘Fallout’ Show An ‘It’s Always Sunny in Philadelphia’ Spin

The Wasteland changes you — possibly from Dayman to Nightman, depending on how the “blanket” scene turns out.

Right now, the post-apocalyptic, retro-futuristic TV adaptation of the Fallout video game series is one of the most talked-about shows on streaming. Amazon Prime Video has already secured a second season of the project, which was launched by a collaboration of Portlandia, The Office and Silicon Valley producer Graham Wagner and Captain Marvel writer Geneva Robertson-Dworet. With so much sitcom DNA involved in the making of Fallout, it’s no surprise that one of the strengths of the series is its delightfully dark humor, which caught the attention of an expert on the genre who also has plenty of experience going for gasps.

Central to the story of Fallout is a post-apocalypse settlement in the former Los Angeles area called “Filly,” which the official Fallout Twitter account found to be a fitting setting for a fanfic crossover with It’s Always Sunny in Philadelphia. Series co-star and co-creator Rob McElhenney one-upped the idea by pitching a Fallout/Always Sunny musical, which makes us wonder who he’d be doing the musical against, be it the Brotherhood of Steel, the NCR or the Vault Dwellers — after all, no one just writes a musical for no reason.

Lynda Carter, who played Wonder Woman in the 1970s TV series about the superhero, joined in on the fun, suggesting the crossover could be titled, “The Gang Explores The Wasteland,” while the official Xbox Twitter account proposed, “The Gang Gets Irradiated.” But, ultimately, McElhenney made one point clear about a possible “Dayman”-style, Fallout-themed It's Always Sunny in Philadelphia musical special — if it’s not written by and starring Charlie Kelly, it might as well be a suit of power armor without its fusion core.

In the event of a nuclear apocalypse, it’s almost undeniable that the Paddy’s Pub gang would somehow survive the ordeal, perhaps by elbowing their way into the nearest vault and turning the entire experiment tits-up almost immediately. Even if Mac, Dennis, Charlie, Dee and Frank were trapped above ground during the blast, much like the radroaches, a nuclear event would probably just make them all stronger.

Though Charlie Day didn’t comment on the possible musical crossover, it’s safe to assume that he’s already on board — we know he’s always liked ghouls.