Caleb McLaughlin’s casting as Lucas Sinclair came with a cruel little joke attached. When the Duffer Brothers finally called to give him the news, they didn’t lead with congratulations. They told him, first, that he hadn’t gotten the part at all.
Table of Contents
- How Caleb McLaughlin’s casting call actually went
- What McLaughlin brought from Broadway to the audition
- Why Caleb McLaughlin’s casting mattered to Lucas Sinclair’s arc
- Growing up on screen after Caleb McLaughlin’s casting
- Frequently asked questions about Caleb McLaughlin’s casting
How Caleb McLaughlin’s casting call actually went
Caleb McLaughlin’s casting story starts with a joke most 13-year-olds wouldn’t have found funny in the moment. According to the Stranger Things Fandom wiki, when the Duffer Brothers called to deliver his casting decision, they pretended McLaughlin hadn’t landed the role of Lucas Sinclair, letting the disappointment sit for a beat before revealing it was all a setup and that he’d actually gotten the part.
McLaughlin was 13 years old at the time, fresh off a two-year run originating the role of Young Simba in Broadway’s “The Lion King.” Square Mile’s account of his casting places the call right after that Broadway run ended, meaning McLaughlin went almost directly from eight shows a week on a New York stage into what would become a decade-long commitment to a single television character. He’s said the entire experience still feels surreal looking back, telling Yahoo Entertainment in a 2025 interview that being on Stranger Things has occupied “almost half” his life.
What McLaughlin brought from Broadway to the audition
Caleb McLaughlin’s casting benefited enormously from a performance foundation most child actors his age simply didn’t have. Before Stranger Things, McLaughlin had trained formally in ballet, tap, and jazz, and had already worked steadily across television guest spots on shows including Law & Order: Special Victims Unit, Unforgettable, and Forever. His path into the industry began even earlier than that, with a childhood ambition traced directly to seeing The Lion King on stage.
“My parents took me to see The Lion King two years before I got the job. I just knew that I wanted to be Simba,” McLaughlin told Neu Neu Media, describing the moment that pushed him into community theater and, eventually, into a professional audition circuit. That early, disciplined training gave him a level of stage presence and physical control that carried directly into how he approached Lucas — a character defined by restraint and caution rather than the flashier arcs given to some of his castmates. McLaughlin has been direct about how much he enjoyed the process itself, telling Jimmy Fallon plainly: “I’m happy with the experience because of the story. Like, I auditioned for the role.”
“I mean, I’ve been on the show almost half my life, and it’s part of my formative years,” McLaughlin told Yahoo Entertainment, reflecting on the show’s ending nearly a decade after his casting.
Why Caleb McLaughlin’s casting mattered to Lucas Sinclair’s arc
Caleb McLaughlin’s casting shaped Lucas Sinclair in ways that went beyond simply filling a role in the Party’s core lineup. DC Douglas’s talent profile on McLaughlin describes his performance as bringing “skepticism, bravery, dryness, and common sense” to a story otherwise dominated by monsters and government conspiracies, arguing that McLaughlin never let Lucas collapse into a one-note skeptic or sidekick. Instead, the character carried real warmth and vulnerability underneath his caution — qualities that trace directly back to McLaughlin’s own range as a trained stage performer rather than a purely reactive child actor.
That range became especially important once the show introduced Max Mayfield, played by Sadie Sink, who was already a friend of McLaughlin’s before either of them joined the cast. Square Mile has described the slow-burn relationship between Lucas and Max as one of the show’s emotional anchors, built on real chemistry between two actors who’d known each other beforehand. By the end of season 4, that relationship pushes Lucas into one of his most physically and emotionally demanding storylines, culminating in a character willing to risk everything for someone he loves — a transformation McLaughlin has credited directly to how much trust and history he and Sink brought into their scenes together.
Growing up on screen after Caleb McLaughlin’s casting
Caleb McLaughlin’s casting turned into one of the more visible examples of a child actor maturing entirely within the same long-running role. He was 13 when cast and closer to 24 by the time the show concluded nearly a decade later, meaning audiences watched him grow from a middle schooler into an adult across five seasons filmed in real time. McLaughlin has said he doesn’t fully know how to process that timeline, describing his feelings about the show’s ending as something close to emotional limbo.
Beyond Stranger Things, McLaughlin built a film career during production breaks, including a leading role in 2020’s “Concrete Cowboy” alongside Idris Elba, along with a Screen Actors Guild Award for Outstanding Performance by an Ensemble in a Drama Series shared with his Stranger Things castmates. He’s remained close with several of them off-screen as well, including a long friendship with Gaten Matarazzo dating back to their overlapping Broadway years, well before either of them had heard of Lucas Sinclair or Dustin Henderson.
For more on the relationship that gave Lucas Sinclair’s later seasons their emotional weight, Read more: Lucas Sinclair covers his full arc across the series. And for the castmate whose own audition for a different role connects directly to this same casting search, Read more: Gaten Matarazzo’s Cleidocranial Dysplasia breaks down how his real-life condition shaped Dustin Henderson.
Square Mile’s full interview with Caleb McLaughlin goes deeper into his reflections on watching the show conclude after nearly a decade, and it’s worth reading in full here.
Stranger Things 5 | Official Trailer | Netflix
Frequently asked questions about Caleb McLaughlin’s casting
How old was Caleb McLaughlin when he was cast as Lucas Sinclair? Caleb McLaughlin was 13 years old when his casting as Lucas Sinclair was confirmed, shortly after finishing a two-year run as Young Simba in Broadway’s The Lion King.
Did the Duffer Brothers really prank Caleb McLaughlin about his casting? Yes. According to the Stranger Things Fandom wiki, the Duffer Brothers initially told Caleb McLaughlin he hadn’t gotten the role of Lucas Sinclair before revealing it was a joke and that he had, in fact, been cast.
What acting experience did Caleb McLaughlin have before his Stranger Things casting? Before his casting, Caleb McLaughlin had trained in ballet, tap, and jazz, originated the role of Young Simba on Broadway, and appeared in guest roles on shows including Law & Order: Special Victims Unit and Unforgettable.
Were Caleb McLaughlin and Sadie Sink friends before Stranger Things? Yes. According to Square Mile, Caleb McLaughlin and Sadie Sink, who plays Max Mayfield, were friends before either was cast on the show, which fed into the on-screen chemistry between Lucas and Max.
How long did Caleb McLaughlin play Lucas Sinclair? Caleb McLaughlin played Lucas Sinclair for nearly a decade, from his casting at age 13 through the show’s conclusion when he was in his mid-twenties.
