Young Sheldon's Main Cast Member Accused Of Being Difficult Officially Responds To Criticism

Published Oct 10, 2026, 9:15 AM EDT

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A member of the Cooper family was apparently difficult to work with in Young Sheldon.

It has been nearly three years since Young Sheldon ended, not because it was struggling with the audience, but because The Big Bang Theory canon mandated its pre-determined end. Defined by the death of George Sr. and Sheldon's move to Caltech, the final stretch of the series was bittersweet. While the Coopers' story somehow continues via Georgie & Mandy's First Marriage, it doesn't really focus on the main family anymore.

By the last few seasons of Young Sheldon, it was already more of a family comedy-drama than a simple origins prequel for Sheldon. During its first few years, however, the focus was on Iain Armitage's boy genius, as his unusual childhood as a genius growing up in rural Texas was its main focus. Unfortunately, at this point in Young Sheldon's history, the actor was quite tricky to work with on the set, which resulted in some friction with other cast members.

The upcoming book by Jessica Radloff, Young Sheldon: The (Juicier-Than-Meemaw’s-Brisket) Inside Story of the Hit Comedy, some members of the cast and people involved with the series recalled working with Armitage during the earliest years of The Big Bang Theory prequel. While all of them were very understanding of how difficult it was for him and Missy actor, Raegan Revord, to be in the industry at such a young age, they were also candid about the struggle of sharing a screen with the show's titular star. For his part, Armitage was very appreciative of people who gave him grace and helped him throughout a tricky time, especially for someone so young during the first few years of Young Sheldon. Read the excerpt from the book below:

Emily Osment: I was their age when I was on a show [Hannah Montana] and it’s tough. You have no idea how tough it is to be in school and also be at work. It’s a lot to juggle, so I have a lot of empathy for that. Iain and Raegan would finish a dinner scene and just get carted off to school. There’s no break.

Annie Potts: It’s a weird life for a kid because they’re working like adults, and it’s expected that they behave as much as possible like adults. They’d be tired or cranky, or I could tell they just needed to run and burn some energy off. I always gave out whoopie cushions because it allowed kids to be a little naughty in a surprising way, like, “Did you just do that?” [Laughs] And in the early years, it was nice to be like a family off set, too. Every once in a while, if the parents weren’t right there, it was, “Hey, you need to stop doing that.” And if you have a familial relationship with them, it doesn’t hurt their feelings so much. But I especially had a little gravity for them, like, “Annie doesn’t want us to do this.”

Steve Holland: Sometimes they’d be bouncing around and you’re trying to give a note, but they’ve moved on to doing something else. And as some of the actors will tell you, that energy could be a lot. So you always have to try to find that line where they’re kids, and you want them to be kids, but you also have a job to do and a limited amount of hours to do it in.

Lance Barber: I think the moms were mostly happy with all our relationships with the kids and gave us freedom to be honest with them in regards to what we needed as professionals. But occasionally, they had to be shut down.

Annie Potts: Here’s the thing . . . we were all working for Iain. We were all serving him. The characters were meant to serve his journey, so that is a lot for a little person to manage psychologically. He was asked to work and carry the weight of something that would be difficult for an adult, and we know that a lot of behavior comes out in situations like that. Yes, sometimes he was difficult. But I’ve worked with grown-ups who were a lot worse. Sometimes I think he was tired, and sometimes I think he pushed people, and people were kissing his ass! It’s a very challenging situation to be 9 years old and be expected to work, behave, and think like a grown-up. And I say that with absolute love and respect.

Iain Armitage: It was a complete privilege to be on this show and play this character, but yes, it was a big undertaking for an 8-year-old. I always did the best that I could, and sometimes kids are not perfect. I was grateful to the people who understood that and gave me grace.

Wallace Shawn: I always found Iain an enchanting person from the earliest days. I love him. He changed enormously over the years because he was very manic at first. He was wild. And you couldn’t sit down and have a conversation with him. He would be running around, almost the absolute opposite of the character that he played, who was so self-contained and sober. And Iain himself was never contained. He was literally running around the set in circles, and with a frightening amount of energy. [But] as the years passed, he evolved into a very graceful, staggeringly well-mannered person. He’s become very, very dignified.

Jason Alexander: Iain is sort of the uber version of what I learned working with kids. He fires on a maturity level and an intellectual level that is beyond anybody else for his age, and you have to respect both at the same time. If you make the mistake of treating him completely not as a kid, he’s not going to enjoy the experience with you, and you’re going to get shell-shocked when he suddenly is a kid, and he’s goofing around between takes, and you’re going, “Wait a minute. What are you doing?” Conversely, if you think of him as a kid, he’s going to feel your lack of respect for him, as a working person. He won’t be disrespectful and he won’t act badly, but he also does not have the skills to engage as much as he does if he’s fully enjoying the person he’s working with. So that was a lovely little dance of going, “Let’s play! Let’s have some fun! Let’s do this! I’m gonna do a silly move! And what do you want to do?” And that became our playtime. He and I clicked really nicely, really fast. And he’s number one on the call sheet, and that has its own responsibilities, weights, concerns, problems.

Alex Reid: Iain wasn’t always comfortable talking about whatever he was really feeling or something, so he just put out this smoke screen of a million words and ideas and thoughts and impressions and accents and jokes, or whatever. There’s a picture of me standing with him next to the Young Sheldon plaque on the stage, and that was after probably our worst run-in with each other. We were doing a scene, and it would not surprise me if Iain didn’t know he was on camera at this specific shot because he kind of wasn’t playing it like he was acting. I went in there and said, “Iain, you’re on camera, so you got to give it your all.” And he took that as “I’m not giving it my all?” He was pissed that I had implied he wasn’t giving it his all, and kept saying, “Well, let’s go again because I need to give it my all.” And when it was over, I went over and I apologized to him, and I said, “That was a terrible choice of words on my part, and I apologize. I was just trying to protect you because you were on camera, and I wasn’t sure if you knew it or not.” So it was all lovey-dovey, and then I asked him if he’d go out and take a picture with me.

Steve Holland: Raegan and Iain were only children who were thrust into this very strange atmosphere. They’re also incredibly different people; they couldn’t be more different. So, they would play and they would fight in a very sibling way, and I think they probably grew more apart as they got older just because they’re such different people. Raegan is outgoing but I think in some ways Raegan’s more of an introvert than Iain. Raegan’s goofy and funny, and Iain can also be goofy and funny but is much more cerebral and likes to talk about things he’s interested in. If he’s working on Russian, he wants to come up and talk to you in Russian. He’s a little Sheldon-like in that way. Raegan is very bookish. Loves to read and loves to play games. But when they were younger, there was more of a sibling dynamic because they were around each other all the time and no one else. Montana was a little older, so it was different for him, but Montana had a very big-brother vibe. He was really sweet to both of them, and was someone they both looked up to. The three of them really did have this very family dynamic.

Tim Marx: There were times when they were getting along famously, and there were times when they were rubbing each other the wrong way. It was very, very real. Montana kind of floated above that a little bit.

Raegan Revord: We definitely were going through the same experience, being 9 years old, growing up in the public eye, and it was such a sudden thing. People can tell you how it’s going to be, but you don’t know until you’re in it. I have people who don’t understand why I’m not forever 10, and I’m like, “There’s this cool thing called time, and I’m not the character from the screen that you saw when they were 10.” And that’s really rare for similar people who are going through that. So it was nice to have someone who understood that process. But like siblings, you bicker and stuff happens. If you spend 12 hours, five days a week on a set, there’s going to be arguments, and people are going to have clashing opinions.

Iain Armitage: Raegan was so much fun to have as a sibling. It definitely did feel like a sibling relationship, and Rae was kind of the only other person on set who understood exactly what we went through, from being on set to going to school. And I have such mad respect for Rae, doing such cool stuff from writing books to Twitch to acting. And I like to say Zoe and Lance and Annie were so good at their jobs, it felt like such a real family. Still, sometimes families can annoy each other, mostly because they just know each other so well.

As the titular character of Young Sheldon, so much of the pressure to make the show successful when it first started rested upon his shoulders. If his performance didn't connect with viewers, the project would have failed, and the fact that it had to sync with Jim Parsons' brilliant stint as the older version of the character definitely added to that. Armitage did well, but it was still work, and he was still a kid, so it made sense that there were times when it was quite difficult to rein him in. Ultimately, however, one can not discount how brilliant he was in that role.

The comparisons to how Sheldon was supposedly like makes Armitage's depiction of the character more interesting. Despite the countless times that the socially-inept genius wreaked havoc or made things difficult for everyone around him — whether it's in The Big Bang Theory or Young Sheldon, the fact that most of his actions were unintentionally made it easier for other people to be graceful to him. Both Armitage and Revord did their jobs well, but one could only imagine how difficult it was to be a child actor on a network TV series that produces 18–20 episodes per year for seven seasons.

While Young Sheldon ended with a completed story for Sheldon, it would have been better if its final season allowed for more moments between him and Missy. At that point, both Armitage and Revord had already significantly grown from when the series started. It would have been nice for them to have a better and clearer end to an era-type of conversation. Perhaps Georgie & Mandy's First Marriage can somewhat deliver on that when Sheldon inevitably shows up.

Young Sheldon

8/10