‘Shrinking’ Season 4 Cast: Harrison Ford, Michael J. Fox and Karen Gillan Updates
Here’s which ‘Shrinking’ stars are expected to return—and who’s joining the cast
Key Takeaways
- Harrison Ford, Jason Segel and Jessica Williams are all expected to return for Season 4.
- Michael J. Fox says he would return to ' ‘Shrinking’ ‘in a heartbeat’ if asked back.
- Karen Gillan has officially joined the cast in an undisclosed new role.
Shrinking Season 4 is officially underway and many fans are wondering who from the cast will be returning, especially since it’s been confirmed that the time jump will be happening. After all, the show just wouldn’t be the same without Harrison Ford, Jason Segel and Jessica Williams. But they aren’t the only actors that might be returning. Back to the Future star Michael J. Fox also hinted that he wanted to return to Pasadena and Altadena, California. And that’s not all. Marvel star Karen Gillan was just cast in the show. For more on the Shrinking Season 4 cast, keep scrolling
Harrison Ford as Dr. Paul Rhoades
Harrison Ford is an award-winning actor most people know from the Indiana Jones series, the Star Wars universe and the hit Taylor Sheridan show 1923. In Shrinking he plays Dr. Paul Rhoades, a veteran therapist who’s battling Parkinson’s disease. He is expected to return for Season 4, which was a relief to fans, since at the end of Season 3 Paul was seen parting ways with mentee James ‘Jimmy’ Laird (Jason Segel).
“I would be insane not to find a way for Harrison Ford to be in the show in perpetuity. He is not disappearing,” showrunner and executive producer Bill Lawrence told Deadline in April of this year. “We’re gonna jump ahead a couple years and see where everybody’s at, and we have a new story to tell. [Harrison Ford] will be part of it. He’s not leaving.”
Ford is 83 years old and has been married to Calista Flockhart since 2010. He has five children.
Jason Segel as James ‘Jimmy’ Laird
Jason Segel first became a household name thanks to his role as Marshall Eriksen on How I Met Your Mother, but over the years he’s built a career balancing broad comedy with more emotionally grounded performances. Along with films like Forgetting Sarah Marshall (2008), The Muppets (2011) and This Is 40 (2012), Segel has increasingly taken on projects that blend humor with vulnerability—something that makes him a natural fit for Shrinking.
On the series, Segel plays Jimmy Laird, a grieving therapist trying to rebuild his life after the death of his wife, a role he’ll reprise when the show returns for Season 4.
“Maybe it’s time for Jimmy to try to have some fun,” Segel teased to The Hollywood Reporter in April of this year. “We’ve seen Jimmy going through it, but it’s been with an emotional twisted ankle. We need to see him run a little bit and break out.”
Segel is 46 years old and engaged to Kayla Radomski.
Jessica Williams as Gaby Evans
Jessica Williams is an Emmy-nominated actress and comedian whose career has spanned both comedy and fantasy franchises. Her previous credits include Fantastic Beasts: The Crimes of Grindelwald (2018), Booksmart (2019), Fantastic Beasts: The Secrets of Dumbledore (2022) and Road House (2024). Before transitioning into acting full-time, Williams also gained attention as a correspondent on The Daily Show.
On Shrinking, she plays Gaby Evans, a close friend and colleague of Paul’s who quickly became one of the show’s standout characters. Williams is expected to return for Season 4.
The actress is 36 years old and originally from Los Angeles, California.
Luke Tennie as Sean
Luke Tennie is an up-and-coming singer, whose role as the patient Sean in Shrinking skyrocketed him to fame. Since then he’s been in The Pitt (2026) and Abbott Elementary (2025 to 2026) and is expected to return for Shrinking Season 4.
Tennie is 31 years old and originally from Chicago, Illinois.
Lukita Maxwell as Alice
Similar to Tennie, Lukita Maxwell is best known for her role in Shrinking. She plays Alice, Jimmy’s teenage daughter and is expected to reprise the part in Season 4.
Maxwell is 24 years old and originally from Jakarta, Indonesia. Her other credits include Generation (2021), The Young Wife (2023) and Backrooms (2026).
Christa Miller as Liz
Christa Miller is an Emmy nominated actress best known for The Drew Carey Show (1995 to 2004), Scrubs (2001 to 2010), Cougar Town (2009 to 2015) and Clone High (2023 to 2024). She plays Jimmy’s neighbor Liz, a role that she is expected to reprise in Season 4.
“I would love Liz to know that her value isn’t only about being a mom. I know she’s looking for things to do and I think it’s great. I think your world should get bigger as you get older, and you should find all these passions,” Miller teased to the Gold Derby in May of this year. “But I think as Liz, trusting these friendships and relationships is enough.”
Miller is 62 years old and has been married to Bill Lawrence since 1999. They have three children together.
Michael Urie as Brian
Michael Urie whose previous credits include Ugly Betty (2006 to 2010), Partners (2012 to 2013), Younger (2016 to 2021) and Krapopolis (2023 to 2026), plays Brian, Jimmy’s best friend. He will be in Season 4 according to reports.
Urie is 45 years old and is in a long-term relationship with Ryan Spahn.
Ted McGinley as Derek
Ted McGinley plays Liz’s husband, Derek. He’s also been in Happy Days (1980 to 1984), The Love Boat (1983 to 1987), Dynasty (1981 to 1989), Married…with Children (1989 to 1997), Hope & Faith (2003 to 2006) and The Baxters (2024). He is expected to be in Shrinking Season 4.
McGinley is 67 years old and has been married to Gigi Rice since 1991.
Michael J. Fox as Gerry
Michael J. Fox is one of the most well-known actors in Hollywood. His credits include The Back to the Future trilogy, Family Ties (1982 to 1989), Spin City (1996 to 2001) and Zootopia 2 (2025). He also became one of the most outspoken Parkinson’s advocates, which is appropriate given that he was diagnosed with the disease in 1991. In Shrinking he plays Gerry, a Parkinson’s patient who befriends Paul. There is no word on if he’s going to be in Season 4, but Fox has said that if given the chance he would love to return.
“I love Bill [Lawrence] and I’m so happy it’s a success. And it’s such a great time being with those actors,” he told People earlier this year. “”It’s so important to me to have that to go to. And I would absolutely do that in a heartbeat.”
Fox is 64 and has been married to Tracy Pollan since 1988. They have four children.
Karen Gillan
Karen Gillan is the newest Shrinking cast member, though who she’ll be playing hasn’t been announced. Gillan’s other credits include the Marvel Cinematic Universe in which she portrays Nebula, Doctor Who (2008 to 2013), Jumanji: Welcome to the Jungle (2017), Jumanji: The Next Level (2019) and The Life of Chuck (2025).
Gillan is 38 years old and originally from Inverness, Scotland, United Kingdom.
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