Buffy the Vampire Slayer comics are tying in with the original TV series - but in the weirdest possible way. Multiverses are all the rage in popular culture right now; the Marvel Cinematic Universe is finally unleashing Multiversal chaos, DC Films is using them to excuse the latest Batman reboot, and Star Trek: Discovery season 3 officially embraced the Multiverse in a nod to the Prime timeline.
Buffy the Vampire Slayer has a Multiverse, too. Technically the show has always had other dimensions - the demons are supposed to come from other planes of existence, while Anya has referred to both a world without shrimps and a world with nothing but shrimps. The current run of Buffy the Vampire Slayer comics has essentially been a reboot, but the recent "Hellmouth" event revealed Hellmouths serve as bridges between the different dimensions. Angel & Spike #16 ended with Angel's crew transported through an interdimensional rift, only to encounter doppelgangers from other realities. But recent issues of Buffy the Vampire Slayer have now gone even further, in the most hilarious and insane way.
Jeremy Lambert and Valentina Pinti's Buffy the Vampire Slayer comic series has seen the Scooby Gang jump to another dimension - and it's one that will be very familiar to fans of the TV series. They're on a version of Earth in the '90s, when there's the titular Slayer in Sunnydale, Xander and Cordelia are dating, and that world's Scoobies are settled in the school library preparing for their next adventure. That's right, the reboot's Buffy has jumped into the original TV series, apparently sometime in season 3.
The reboot Scoobies realize it probably won't be wise to interact with their other-dimensional doppelgangers, and so they're keeping their heads down in the classic Sunnyfield. At the same time, though, it's interesting to note none of the dialogue is lifted from the actual show itself, raising the possibility they may yet cross paths with the original Buffy and her friends down the line. "Can't let anyone see you because it will screw everything up," Anya cautions in Buffy the Vampire Slayer #25, which seems rather like tempting fate where Slayers are involved.
Amusingly, the comics have actually revealed how the reboot fits with the original series. In one scene, the gang chows down on shrimp tacos, only to admit they have no idea what shrimps are. It seems they originate from the timeline Anya mentioned, the world without shrimps. Illyria, one of the Old Ones, claimed to have briefly visited this world - but she tired of it quickly. Presumably, that event happened years ago in the reboot timeline, because she'd no doubt have found it a lot less boring if there'd been a version of Buffy around.