Walter Koenig, best known as Ensign Pavel Chekov on the original Star Trek television series and in seven Star Trek films, died Sunday, October 25. He died at his home in North Hollywood. He was 90. His representative said he died of old age, surrounded by his daughter and niece.

Koenig joined Star Trek in its second season as the young Russian navigator. He later played Chekov across the early film series, including a large role in Star Trek II: The Wrath of Khan. He also appeared as Psi Cop Alfred Bester on Babylon 5 and worked as a writer and acting teacher. Variety, The Guardian, and NBC News reported the death from his representative's statement.

His death leaves William Shatner and George Takei as the last surviving main cast members of the original series. Takei, whose wedding Koenig served as best man in 2008, called him "a thoughtful man, and a loyal friend." Takei also thanked fans who loved Koenig for many years and asked him to rest well now.

Koenig was born in Chicago and raised in New York. Beyond Star Trek he wrote for television, taught acting, and appeared at fan events for decades. He also wrote memoirs about his years on the franchise and kept meeting fans long after the original show left the air for good. He is survived by his daughter, Danielle Koenig. His wife, Judy Levitt, died in 2022, and their son Andrew died in 2010.

What we know: Koenig died Sunday at 90 at home. His representative cited old age. Shatner and Takei remain from the original main cast.
What we don't: Funeral arrangements, which have not been announced in the cited reports.