Robert Walker Jr., who appeared on the “Star Trek” show and starred in the movie “Vengeance Valley,” has died, according to a statement made by his wife, Dawn Walker. 

In the statement obtained by The Hollywood Reporter, Dawn said: “Bob always beat to his own drum and stayed true to himself in all of his endeavors. Although an accomplished actor, his true art was living fully. He was a photographer, drummer, raconteur and gallery owner. His love of the ocean kept him in Malibu, and he had great tales of his adventures paddling to Catalina from there. Bob [also] had a constant interest in developing his internal martial arts practice.”

Walker has left behind his seven children, Michelle, David, Charlie, Jordan, Colette, Henry and Emily and five grandchildren.

Walker was born on April 15, 1940, in Queens, New York. His parents were famous actors Robert Walker Sr. and Jennifer Jones. 

At the time of this writing, the cause of Walker’s death is unknown.

During his acting career, Walker became a fan favorite when he appeared on Season one, episode two of “Star Trek” as Charlie Evans. 

This is the second person involved in the original “Star Trek” series to die this week. DC Fontana was “Star Trek’s” first female writer and a writer on Walker’s episode, passed away on Monday at 80-years-old.

Trekkies expressed their grief for Walker on Facebook with heartfelt messages. 

“Wow. So unsettling that Walker dies so shortly after Dorothy Fontana, who wrote "Charlie X"--I'll never forget his performance in that. I think this guy was always in the shadow of his brilliant father but he showed whenever he was onscreen that he had the same fascinating, slightly unnerving quality Robert Walker, Sr. had. Goodbye, Charlie,” one user posted.

“We are saddened by another loss in the Star Trek family. Robert Walker Jr. was beloved as Charlie. Our thoughts are with his family, friends and fans,” another person said