Walter Koenig, the original “Star Trek” cast member best known for playing Ensign Pavel Chekov, has died at 90.
Koenig died Sunday at his home in North Hollywood, California, according to a statement his agency shared on Facebook Monday.
His agency said the actor died of old age. His daughter, Danielle, and his niece were by his side.
“Walter’s legacy extends far beyond the screen,” the statement said. “Through countless convention appearances and interactions with fans, he shared his kindness, wit, and appreciation with everyone fortunate enough to meet him.”
“He understood what ‘Star Trek’ meant to people and embraced the community that grew around it,” the agency added.
“Thank you, Walter, for the memories, the inspiration, and for boldly going where few have gone before.”
George Takei, Koenig’s “Star Trek” co-star who portrayed Sulu, was among those to pay tribute.
“My heart is heavy,” Takei wrote in an emotional Facebook post. He said the two actors first met in 1960 and remained friends for decades.
“Walter was more than Chekov,” Takei wrote. “He was a writer, a teacher, a thoughtful man, and a loyal friend. To the fans who loved him for so many years, thank you. He loved you too.”
Born Sept. 14, 1936, in Chicago, Koenig grew up in New York City. His parents were Russian Jewish immigrants.
According to his Hollywood Walk of Fame biography, Koenig initially studied pre-med at Grinnell College in Iowa. He later transferred to the University of California, Los Angeles, where he earned a Bachelor of Arts degree in psychology.
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While at UCLA, a professor encouraged him to pursue acting. That advice eventually led Koenig to New York’s Neighborhood Playhouse.
Koenig made one of his earliest television appearances on “Combat!” in 1962, followed by a role on “The Untouchables” the next year.
He also appeared in two 1963 episodes of “General Hospital,” playing Charlie Turner, before landing the role that would define his career: Chekov on the “Star Trek” television series in 1967.
In a 2013 interview with the TV Academy Foundation, Koenig revealed that he had never watched “Star Trek” before joining the cast for its second season.
He learned he had won the part soon after auditioning, while waiting alone in a room for several hours before a wardrobe assistant came to collect him.
“He drops on his knees in front of me,” Koenig recalled. “[He] takes my crotch in his hand, and I’m saying, ‘What are you doing?!’ I didn’t see the tape-measuring ruler in his other hand, and he was measuring from my crotch to my cuff to decide how long my pants should be. He says, ‘You do have to have a costume, don’t you?’”
“And that’s the auspicious way I learned I was on ‘Star Trek’ and it was going to change my life,” Koenig said.
Koenig remained on the series through its third season in 1968, appearing alongside William Shatner as Captain James T. Kirk and Leonard Nimoy as Mr. Spock.
He returned as Chekov in “Star Trek: The Motion Picture” in 1979, then reprised the character in “Star Trek II: The Wrath of Khan” in 1982 and “Star Trek III: The Search for Spock” in 1984.
He also appeared in the following movies from 1986 to 1994, and in other sequels for the franchise.
Koenig’s last movie credit was the 2025 film “Raging Midlife.” He also starred as himself in the 2025 30-minute short “Lost Voyages: Phase II and the Rebirth of Star Trek.”
He married Judy Levitt, who also starred in the “Star Trek” movies, in 1965. They shared Danielle and their late son, Andrew, who died by suicide in 2010, and were together until Levitt passed away in 2022 at the age of 83.