Karen Gillan is officially heading to Apple TV’s ‘Shrinking’ for Season 4. The actress joined the hit comedy-drama in a recurring role as the series prepares to move into a completely new phase following the emotional fallout of Season 3.
The casting announcement arrived in late May 2026, with Apple and the production team keeping details about Gillan’s character tightly under wraps. Her addition comes as the series plans a major narrative reset, with the next season reportedly featuring a significant time jump rather than continuing directly from the previous finale.
New Beginning for ‘Shrinking‘
The cast list for Season 4 includes almost all the main characters from previous installments—Jason Segel, Harrison Ford, Jessica Williams, Christa Miller, Luke Tennie, Michael Urie, and Lukita Maxwell. However, while the returning characters will still be played by the same actors, the showrunners are planning to use the opportunity created by the time skip to tell a brand new story centered around Jimmy Laird and his fellow members of the Pasadena therapy group.
For instance, Karen Gillan’s casting seems like the perfect addition to the series just before such a dramatic overhaul. Although her character isn’t known yet, it’s safe to assume that Gillan will fit the role well thanks to her versatility as a performer and ability to bring out the comedy and heart needed in this kind of show.
Most audiences know Gillan from playing Nebula across Marvel’s ‘Guardians of the Galaxy’ and ‘Avengers’ films, alongside major franchise work in the ‘Jumanji’ reboot series and her breakout role as Amy Pond in ‘Doctor Who.’ Beyond the blockbuster projects, though, Gillan has consistently shown strong comedy instincts in smaller projects like ‘Selfie,’ which makes her a strong fit for the balance of humor and emotional vulnerability the Apple series thrives on.
That’s why Karen Gillan seems like a great choice as a member of the cast for ‘Shrinking’, where the showrunners plan to introduce a completely new storyline in the next season. So, she might appear as a new client in Jimmy’s life, a psychologist at the Cognitive Behavioral Therapy Center, or even as someone related to any of the existing characters via the impending time skip.
No information was shared about when exactly to expect Season 4’s premiere, but filming is reportedly set to commence soon.
