Michael Gray, who starred in the 1970s CBS show "Shazam!," has died at 75, according to Deadline and USA Today.

Gray died of natural causes on October 16 in Palm Desert, California, his rep confirmed to Deadline. A family spokesperson announced the death, The Hollywood Reporter said.

Gray played Billy Batson, a teenage boy who turned into the superhero Captain Marvel by saying the magic word "Shazam!" the outlets reported. The live-action show aired on Saturday mornings on CBS from 1974 to 1976, Deadline reported. ComicBook.com said it ran for three seasons and 28 episodes.

"I didn't know the character or the story when I was initially cast, so I had to be a quick study," Gray said at Comic-Con in 2012, according to Deadline and ComicBook.com.

Gray was a teen idol in the 1970s, often on the covers of teen magazines, the outlets reported. He played Marcia's boyfriend in a 1973 episode of "The Brady Bunch," Deadline and ComicBook.com said.

He also had guest roles on "Room 222," "Dynasty" and "The Flying Nun," Deadline reported. He appeared in the 1970 films "Beyond the Valley of the Dolls" and "Myra Breckinridge," it said.

In later years, he voiced a version of himself on the FX cartoon "Archer," Deadline reported. He also had a cameo in the film "Shazam! Fury of the Gods," the outlets said.

Gray was born in Chicago in 1951 and grew up in Miami Beach, Florida, ComicBook.com reported. He is survived by his wife, Stacy Benon Gray, and two stepchildren, it said.

Gray said in 2012 that fans would say to him, "You have no idea what you did for me as a child," ComicBook.com reported.

What we know: Gray, the original Billy Batson on TV, died of natural causes at 75.
What we don't: Plans for a memorial service.