(FILES) Stars of the original "Star Trek" television series; Leonard Nimoy (L), Nichelle Nichols (2R) and George Takei (R), pose with actor Walter Koenig (2L) as he is honoured with a star on the Hollywood Walk of Fame in Hollywood on September 10, 2012. Walter Koenig, the actor best known for his role as Pavel Chekov throughout the sci-fi franchise "Star Trek," has died, his representative said. He was 90 years old. Koenig died overnight at his home in North Hollywood in Los Angeles, his agent Zachery McGinnis said in a statement on October 26, 2026, citing the cause of "old age" without further details. (Photo by ROBYN BECK / AFP via Getty Images)