Actor Walter Koenig, known for playing Ensign Pavel Chekov on “Star Trek,” has died at 90. His talent agent confirmed he passed away Monday at his home in Los Angeles.

Koenig played Chekov in seven “Star Trek” movies starting in 1979, as well as innumerable other spinoffs, including writing a “Star Trek” book, “Chekov’s Enterprise,” in 1980.

The sci-fi community is mourning the loss of actor Walter Koenig, who passed away at age 90 at his home in North Hollywood, surrounded by his daughter and niece. Born