The creator-star of the hit ABC sitcom also teases what season four's future holds for her Janine and Gregory (Tyler James Williams), and reveals the one Philly celeb she hasn’t asked to guest star.

Abbott Elementary” fans, you can go ahead and retire any lingering “will they or won’t they?” concerns. Months after the show’s Season 3 finale finally brought Janine (Quinta Brunson) and Gregory (Tyler James Williams) together,

"Abbott Elementary" EP Patrick Schumacker teased that some scenes from the "Always Sunny" crossover will "probably never make it to ABC."

While plenty of new faces are arriving at the Philly elementary school, Abbott fans can rest assured that some traditions are back. After having a midseason start last year, the show is back to a 22-episode season, which means holiday episodes are coming.

Abbott Elementary” star and creator, Quinta Brunson, and “It’s Always Sunny in Philadelphia” star and co-creator. Rob McElhenney, both shared news they’re collaborating on a crossover episode on social media.

Much like a kid entering the fourth grade, Abbott Elementary is growing in season 4 with many fresh faces — and Quinta Brunson tells Us she can't wait for fans to meet the show’s new characters. Among the newbies on the ABC sitcom will be family members of the teachers at Abbott.

Historically, the art of the television crossover - when characters from one TV series show up on another TV series in an episode (or two) - unoffically began when Superman (George Reeves) from The Adventures of Superman was the guest of honor at Little Ricky’s (Keith Thibodeaux) birthday party on I Love Lucy in 1957.

Quinta Brunson’s hit TV show has been teased to get a crossover episode for its fourth season on ABC, and it appears that it will be alongside It’s Always Sunny in Philadelphia. On Thursday (Oct. 3),