Walter Koenig, best known for playing Russian navigator Pavel Chekov in the original Star Trek television series and its subsequent film adaptations , has died aged 90.

The actor died surrounded by his daughter and niece at his home in North Hollywood, Los Angeles, on Monday, according to a statement from his talent agent, Zachery McGinnis.

“Walter’s legacy extends far beyond the screen. 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,” McGinnis said. “Thank you, Walter, for the memories, the inspiration, and for boldly going where few have gone before.”

Koenig joined the science-fiction franchise in its second season, portraying Ensign Chekov aboard the USS Enterprise .…