David Krumholtz is an American actor whose career stretches across film, television, Broadway and comedy. Born on May 15, 1978, in Queens, New York, he began working professionally as a child and gradually developed into one of Hollywood’s most recognizable character actors. His credits include The Santa Clause, 10 Things I Hate About You, Harold & Kumar, Numb3rs, The Deuce, Oppenheimer, and Supergirl.
What makes his career particularly interesting is its range. He has played comedic supporting characters, dramatic television leads, historical figures and unusual comic roles without becoming tied permanently to one type of performance.
Who Is David Krumholtz?
David Krumholtz grew up in Queens in a working-class family. His father, Michael, worked as a postal employee, while his mother, Judy, was a dental assistant. His paternal grandparents immigrated from Poland, and his mother came to the United States from Hungary.
His professional acting career began at a young age. He made his Broadway debut in Conversations with My Father in 1992, establishing a connection with the stage that he would revisit decades later.
Early screen appearances included Addams Family Values, Life with Mikey, The Ice Storm, and 10 Things I Hate About You. These roles helped establish him as a dependable young performer capable of handling both comedy and drama.
David Krumholtz and The Santa Clause
One of the roles that introduced David Krumholtz to a wide family audience was Bernard the Elf in The Santa Clause. He appeared in the original 1994 movie and returned for subsequent entries in the franchise. His performance as Bernard combined sarcasm, confidence and comic timing, making the character memorable despite his supporting status.
The role became an early example of something that would define Krumholtz’s career: taking secondary characters and giving them enough personality to remain memorable after the main storyline has moved on.
Numb3rs Made Him a Television Star
For many viewers, Charlie Eppes remains the defining role of David Krumholtz’s television career. He starred in CBS’s Numb3rs from 2005 to 2010, playing a mathematical genius who helps his FBI agent brother, Don Eppes, solve crimes.
The series gave Krumholtz significantly more room to develop a character over time. Charlie was brilliant but also socially complicated, emotionally vulnerable and deeply connected to his family.
The show’s six-season run included 118 episodes, making it a substantial part of his career.
| Career Period | Notable Work | Why It Matters |
|---|---|---|
| 1990s | The Santa Clause, 10 Things I Hate About You | Established him as a young supporting actor |
| 2000s | Harold & Kumar, Serenity, Numb3rs | Expanded his comedy and television profile |
| 2010s | The Deuce, Gigi Does It, Hail, Caesar! | Demonstrated greater creative range |
| 2020s | Leopoldstadt, Oppenheimer, Supergirl | Added major stage and prestige-screen roles |
His Best-Known Movies and TV Shows
A major strength of David Krumholtz’s filmography is its variety. He has moved between mainstream studio productions, independent films, television dramas and offbeat comedy.
Some notable credits include:
- Addams Family Values (1993)
- The Santa Clause franchise
- 10 Things I Hate About You (1999)
- Harold & Kumar Go to White Castle (2004)
- Serenity (2005)
- Superbad (2007)
- Hail, Caesar! (2016)
- The Ballad of Buster Scruggs (2018)
- The Deuce (2017–2019)
- The Plot Against America (2020)
- Oppenheimer (2023)
- Supergirl (2026)
His work in The Deuce and The Plot Against America also showed a more dramatic side, while Gigi Does It allowed him to take on a highly unusual comedic role. Apple similarly lists Oppenheimer and Supergirl among his recent screen credits.
đź’ˇ Pro Tip: If you’re exploring his work for the first time, don’t judge his range from one movie. Watching Numb3rs, 10 Things I Hate About You, Oppenheimer, and The Santa Clause gives a much clearer picture of how dramatically his performances can differ.
David Krumholtz in Oppenheimer
Christopher Nolan’s Oppenheimer introduced David Krumholtz to another generation of movie audiences. He played physicist Isidor Isaac Rabi, a Nobel Prize-winning scientist who was involved with the Manhattan Project as a consultant.
Although the part was not one of the film’s central roles, Krumholtz’s presence contributed to the movie’s unusually deep ensemble cast. Oppenheimer also represented a significant shift from many of his earlier comedic and television appearances.
The performance helped remind audiences that the actor could fit naturally into serious historical drama without relying on the comic persona associated with some of his better-known roles.
David Krumholtz in Supergirl
Another major recent credit is Supergirl, the 2026 DC Studios film starring Milly Alcock as Kara Zor-El. Krumholtz plays Zor-El, Supergirl’s father, alongside Emily Beecham as her mother.
The film is directed by Craig Gillespie and is based on the comic storyline Supergirl: Woman of Tomorrow. It also features Jason Momoa as Lobo and Eve Ridley as Ruthye Marye Knoll.
For Krumholtz, the project is another example of his ability to move between very different genres. His role is connected to the emotional history of Kara rather than being a conventional comic-relief appearance.
David Krumholtz and Broadway
Film and television have not been the only parts of his career. Krumholtz returned to Broadway in 2022 in Tom Stoppard’s Leopoldstadt, playing Hermann Merz. The production earned strong critical attention, and Krumholtz received a Drama League Award nomination for his performance.
His stage work is significant because it demonstrates that his career has never been limited to screen acting. Broadway also provided an opportunity to work in a demanding dramatic environment far removed from his earlier sitcom and movie roles.
What Is David Krumholtz Doing Now?
As of August 2026, Krumholtz’s career has entered an unusual period. Recent reports say he announced an indefinite break from acting, describing frustration with aspects of the modern Hollywood system and the way character actors are treated. He indicated that the decision was not necessarily a permanent retirement and discussed an interest in motivational speaking, particularly for students.
That development adds an unexpected chapter to a career spanning more than three decades. His recent appearance in Supergirl also means audiences have a current major studio performance to look back on while his next professional move remains uncertain.
đź“Ś Key Takeaway: David Krumholtz has built a career by avoiding one fixed screen identity. From Bernard in The Santa Clause and Charlie Eppes in Numb3rs to Isidor Rabi in Oppenheimer and Zor-El in Supergirl, his strongest asset has been versatility.
Frequently Asked Questions
What is David Krumholtz best known for?
David Krumholtz is best known for playing Charlie Eppes on Numb3rs and Bernard the Elf in The Santa Clause franchise. He has also appeared in 10 Things I Hate About You, Harold & Kumar, Oppenheimer, The Deuce, and Supergirl.
How old is David Krumholtz?
David Krumholtz was born on May 15, 1978, in Queens, New York City. As of August 2026, he is 48 years old.
Who does David Krumholtz play in Oppenheimer?
He portrays Isidor Isaac Rabi in Christopher Nolan’s Oppenheimer. Rabi was a real physicist and Nobel Prize winner who served as a consultant on the Manhattan Project.
Who does David Krumholtz play in Supergirl?
Krumholtz plays Zor-El, the father of Kara Zor-El, in the 2026 Supergirl movie. Emily Beecham plays Kara’s mother, while Milly Alcock stars as Supergirl.
Is David Krumholtz retiring from acting?
Recent reports say he is taking an indefinite break from acting rather than announcing a definitive permanent retirement. He has expressed frustration with Hollywood and suggested he may explore other work, including motivational speaking.
Conclusion
David Krumholtz has spent more than 30 years building a career that is unusually broad for a character actor. His filmography moves comfortably from family comedy to crime drama, independent cinema, Broadway and major studio productions.
The latest chapter is less predictable. Following his work in Supergirl, reports of an indefinite acting break have raised questions about what comes next. Whatever direction he chooses, David Krumholtz has already created a body of work that reaches several generations of film and television audiences.
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