- Kelsey Grammer's two most famous characters made surprising comebacks in 2023.
- Grammer has a history of returning to his characters, like his cameos as Beast in X-Men: Days of Future Past and Sideshow Bob in The Simpsons.
- The possibility of Grammer's Beast appearing in the MCU has been set up in The Marvels' mid-credits scene, with potential future appearances in Avengers: Secret Wars.
Grammer has something of a track record with returning characters: in X-Men: Days of Future Past, he reappeared for a cameo as Beast 8 years after X-Men: The Last Stand, and he has repeatedly returned as Sideshow Bob in The Simpsons. Before that, of course, his most famous character, Frasier Crane, returned after Cheers in his own spin-off. Grammer, it seems, is something of a boomerang.