<P> Charles William Mumy Jr. ( / ˈmuːmi / ; born February 1 , 1954 ) is an American actor , musician , pitchman , instrumentalist , voice actor , author and a figure in the science - fiction community . He came to prominence in the 1960s as a child actor , when he was credited as Billy Mumy , an era which included memorable appearances in The Twilight Zone and Alfred Hitchcock Presents television shows , as well as co-starring in Dear Brigitte with James Stewart and Brigitte Bardot , followed by an iconic three - season role as Will Robinson in the 1960s CBS sci - fi series Lost in Space . </P>
<P> Charles William Mumy Jr. ( / ˈmuːmi / ; born February 1 , 1954 ) is an American actor , musician , pitchman , instrumentalist , voice actor , author and a figure in the science - fiction community . He came to prominence in the 1960s as a child actor , when he was credited as Billy Mumy , an era which included memorable appearances in The Twilight Zone and Alfred Hitchcock Presents television shows , as well as co-starring in Dear Brigitte with James Stewart and Brigitte Bardot , followed by an iconic three - season role as Will Robinson in the 1960s CBS sci - fi series Lost in Space . </P>
who played will robinson on the original lost in space
who played will robinson on the original lost in space
Charles William Mumy Jr.
Charles William Mumy Jr.