The actor joined the original TV series during its second season and appeared in numerous franchise shows and movies over the decades

Walter Koenig , the actor and writer best known for his portrayal of Pavel Chekov in the original Star Trek TV series and numerous films, died Sunday, Variety reports. He was 90.

Koenig’s reps confirmed his death in a statement, saying he died of old age at a home in North Hollywood, surrounded by his daughter and niece. “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,” the statement read.

It continued, “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.…