Walter Koenig, Star Trek's Chekov, Dies at Age 90

Walter Koenig, who played Chekov on the original Star Trek series, has died at age 90. “The late actor's rep tells us ... Walter's daughter, Danielle, and his niece were by his side when he died of old age at his home in North Hollywood on Sunday,” TMZ reports . Koenig joined the NBC series Star Trek in its second season as the USS Enterprise’s Russian crewmember Ensign Pavel Andreievich Chekov. With his Beatles-style mop of hair, the boyish Chekov was meant to appeal to younger viewers a la Davy Jones of The Monkees.