“Star Trek” actor Walter Koenig has died. He was 90.

The New York City raised performer who played Ensign Pavel Chekov in the original version of the 1960s sci-fi drama died Sunday in the company of loved ones.

“Today we mourn the passing of Walter Koenig, whose talent, warmth, and unforgettable performances left a lasting mark on generations of fans around the world. He passed of old age at home in North Hollywood last night surrounded by his daughter and niece,” his talent agency announced on Monday.

He was mourned by former castmate George Takei, who played Lieutenant Hikaru Sulu.

“My heart is heavy,” Takei posted on social media.

He recalled meeting Koenig 60 years ago while filming “Star Trek” and forming a lifelong friendship. Koenig served as Takei’s best man when he married Brad Altman in 2008.

“Just last month on Sept. 14, he turned 90, on the same day Brad and I celebrated our 18th wedding anniversary,” Takei added.

Takei and Captain James T. Kirk actor William Shatner, 95, are the only living members of the original series’ main cast. Leonard Nimoy, 83, who played Enterprise science officer Spock, died in 2015. Nichelle Nichols, best known as Lieutenant Uhuru, died in 2022 at 89 years old. DeForest Kelley, who portrayed Dr. Leonard “Bones” McCoy, died in 1999. He was 79.

Koenig’s other screen credits included television appearances on “Combat!,” “General Hospital,” “Gidget,” “I Spy” and “Son of the Beach,” according to IMDb.

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