Young Sheldon Cast: A Complete Guide to the Actors & Characters

Meet the Coopers (and Friends!): A Complete Guide to the Young Sheldon cast!

Young Sheldon: From Texas to Caltech – A Family Affair!

Young Sheldon, the insanely popular prequel to The Big Bang Theory, gives us a look at young Sheldon Cooper's life, and man, is it a wild ride. The show brilliantly connects to the original, showing us where those quirky behaviors and those famous lines originated! This show totally exploded; creating its own success despite airing back-to-back with its original series. It started in 2017 – it really built its own legacy – which created this wonderful and extremely long run with the main cast! While it finished up recently after a very long seven seasons, things haven’t really ended; another sequel already announced!

This is all about the main cast of characters– showcasing how these actors were involved in prior roles, how their involvement continues with spinoffs, and highlighting how incredibly amazing some of these actors are – and you might be seriously surprised. We're talking about those main Cooper family members and some of those key supporting characters— both new faces, and actors playing versions of familiar characters that appeared previously in The Big Bang Theory! Prepare yourselves – because some of the involvement and choices made to bring these amazing characters to life will seriously surprise you.

Also Read: The Big Bang Theory Finale Explained: Sheldon's Nobel, Penny's Pregnancy, and Raj's Date

The Core Cast: Sheldon and His Family

Meemaw and Sheldon hugging on her couch on Young Sheldon. Image

Sheldon Cooper (Iain Armitage) and Adult Sheldon (Jim Parsons)

Iain Armitage plays young Sheldon, a role taken over from Jim Parsons (the Big Bang Theory version), portraying this brilliant but seriously socially awkward kiddo. Armitage brings the young Sheldon to life – this once-in-a-generation genius! He brings that already serious passion and inclination for theoretical physics.

Outside Young Sheldon? Armitage had success elsewhere. He’s appeared on YouTube, and in Big Little Lies, even guesting in Law & Order: Special Victims Unit. On the big screen? He did voice work in Scoob! and PAW Patrol: The Movie.

Parsons (adult Sheldon's narrator) won tons of awards (four Primetime Emmys) for his original Sheldon role, bringing that truly incredible and famous Sheldon to life! He's been seen in several other films such as Hidden Figures and Extremely Wicked, Shockingly Evil and Vile. Those guys were awesome!

Mary Cooper (Zoe Perry)

Zoe Perry plays Sheldon's mom, Mary Cooper; She's got a fun connection–she's Laurie Metcalf’s real-life daughter (who played Mary in The Big Bang Theory). Mary's a devout Baptist; constantly protecting her kids; even demonstrating that incredible amount of tenderness even as she acknowledges those eccentric quirks inherent to Sheldon.

Zoe Perry is really, really talented and already famous: starting her television work in New York City, and starting way, way back in 1992. This even includes an earlier connection with the shows featured; playing young Jackie in Roseanne (again, that's another character where the daughter played the young version of Laurie Metcalf's character) and appeared elsewhere!

George Cooper Sr. (Lance Barber)

Mary Coper looking angry at bowling alley in Young Sheldon Image

Lance Barber plays Sheldon's dad, George Cooper Sr.—a character that differs entirely from The Big Bang Theory's hints – making Young Sheldon a really key narrative exploration and explaining parts of Sheldon's behavior from the original TV show that could not have previously made sense without this important prequel!. The portrayal highlights those kinds of changes needed when recreating past characters into present storylines: creating nuanced additions and explanations that create strong backstories which could then better connect back into other major plot points and provide deeper explanation to character designs.

Barber's an accomplished actor with his breakout being in The Comeback, having lots of roles in iconic shows such as It's Always Sunny in Philadelphia and Brooklyn Nine-Nine, He even played a younger Leonard's bully in The Big Bang Theory – making his participation and role in Young Sheldon an entirely interesting point! It creates a strong emotional connection when watching these kinds of scenes.

Georgie Cooper Jr. (Montana Jordan)

George Sr. sitting at the table and smiling in Young Sheldon Image

Montana Jordan plays Sheldon's older brother, George “Georgie” Cooper Jr. (who had a brief appearance before Sheldon’s wedding in The Big Bang Theory), showing his eventual success in owning a Mr. Tire dealership. He’s not like Sheldon – he’s got great business instincts and will even become a father in the show – creating another surprising arc and narrative which greatly improves and develops that story from earlier!

Jordan’s acting began early– playing a young Josh Brolin’s son (in The Legacy of Whitetail Deer Hunter), that’s really after he appeared in Young Sheldon! He also was a younger Georgie in The Big Bang Theory/Young Sheldon crossover.

Missy Cooper (Raegan Revord)

Jim Parsons's pleased Sheldon displays a model train to Melissa Rauch's intrigued Bernadette in The Big Bang Theory Image

Raegan Revord plays Sheldon’s twin sister, Missy Cooper (again, another key member within the Cooper family); She is known for being highly emotionally intelligent (as the psychological assessments shown earlier demonstrated). In the original The Big Bang Theory storyline she's surprisingly supportive and is often extremely proud of Sheldon's achievements and these key events would ultimately make these emotional connections between the shows far more relevant and impactful than if she only remained the “bickering” sibling character mentioned frequently throughout the earlier episodes of this series.

Revord has many impressive achievements: appearing in Modern Family and Alexa & Katie.

Connie Tucker/Meemaw (Annie Potts)

Missy smiling in her kitchen in Young Sheldon Image

Annie Potts plays Meemaw (Connie Tucker), Sheldon's grandmother and Mary's mother! She is extremely unique! In The Big Bang Theory she's that kind old lady, but in Young Sheldon? That sassy, sarcastic grandmom that actually adds significant conflict.

This incredibly accomplished actor–Potts is iconic; Janine Melnitz (in the Ghostbusters franchise, later in Ghostbusters: Frozen Empire!) She also has an iconic role in Pretty in Pink and is even Bo Peep's voice in the Toy Story films. This actress shows how vastly varied some characters in TV and Film are. Her incredible skill in conveying emotions really makes Meemaw's personality much clearer!

Mandy McAllister (Emily Osment)

Young Sheldon's Missy with TBBT's Howard, Penny, and Leonard Image

Emily Osment joins as Mandy McAllister (in season 5); She’s got that key long-term relationship with Georgie – a regular character from season 6 onward! This later impacts Georgie's life – becoming the mother of his child! Osment is awesome, well-known for several roles. You will really recognize Lilly Truscott from Hannah Montana!

Also Read: Young Sheldon's Finale Reveals The Big Bang Theory's Sheldon Was A Better Son Than He Seemed

The Extensive Supporting Cast: Teachers, Neighbors, and More!

Mandy and Georgie looking at each other in Young Sheldon season 6 Image

And let's not forget the awesome supporting cast— another cast with deep talent and expertise across the industry! It is this massive collection of talent that greatly distinguishes Young Sheldon's popularity. Many actors here are familiar faces— teachers, neighbors, parents of other characters and this expansive, interconnected community make Young Sheldon's Texas hometown so richly memorable.

It is necessary to remember a few very prominent individuals; this article highlights only some key members from the expanded and larger ensemble. There’s Wallace Shawn (Professor Sturgis); Ed Begley Jr. (Dr. Linkletter); Matt Hobby (Pastor Jeff); Wyatt McClure (Billy Sparks), Melissa Peterman (Brenda Sparks), Billy Gardell (Herschel Sparks); Ryan Phuong (Tam Nguyen), Craig T. Nelson (Dale Ballard); Reba McEntire (June), McKenna Grace (Paige Swanson); Andrea Anders (Linda Swanson), Doc Farrow (Coach Wilkins), Valerie Mahaffey (Victoria MacElroy); Brian Stepanek (Hubert Givens), Jason Alexander (Mr. Gene Lundy), Daniel Pinnock (Evelyn Ingram), Rex Linn (Tom Petersen), Nancy Linehan Charles (Peg), London Cheshire (Marcus), Chris Wylde (Glenn), Sarah Baker (Sheryl Hutchins), Isabel May (Veronica), Mary Grill (Officer Robin), Ava Allan (Jana), and Dan Byrd (Pastor Rob).

Also Read: Private Practice: Grey's Anatomy's BEST Spin-Off Needs A Comeback!

Conclusion: Young Sheldon’s Unending Legacy

Young Sheldon wrapped its long seventh season; a long run for a prequel that generated immense fan engagement, showing it fully capitalizing on audience expectations and creating something amazing. The original storyline concluded yet things keep going; A new spinoff– Georgie & Mandy's First Marriage— features some of Young Sheldon’s main characters showing that the stories haven’t truly ended and fans are going to see a lot of returning actors including some surprising new roles; demonstrating the enormous and expansive success in casting!

This ensemble is what truly makes this entire series so successful and iconic! Those incredibly diverse characters are deeply interwoven! And the superb cast has made some deeply enjoyable television; highlighting those complex and interesting personalities that appear throughout!