Where are These Beloved Child Stars Today?

Billy Mumy became a 1960s sci-fi icon as young Will Robinson on Lost in Space. With his earnest expressions and adventurous spirit, he anchored the show’s emotional core, guiding viewers through its fantastical chaos. Mumy’s natural charm and poise made him one of the decade’s most recognizable child actors.

Before that, he also appeared in dozens of TV shows, including a chilling role on The Twilight Zone. Mumy’s intelligence and composure on screen set him apart, helping him build a prolific career as one of the era’s most reliable young performers.