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Bill Mumy (pronounced MOO-mee) born Charles William Mumy, Jr. on February 1, 1954 is still around. He is an actor, musician and voice-over actor.
In addition to playing Will Robinson in Lost in Space, he has been in a number of movies and TV shows. His credits inclued The Twilight Zone, Bewitched, The Munsters and Babylon5.
His voice-over skills can be heard commercials for Farmers Insurance, Ford, Blockbuster and McDonald's as well as Animaniacs, The Oz Kids and Scooby Doo.
He currently lives in Hollywood Hills, California with wife, Eileen and their two kids, Seth and Liliana who has been in the Santa Clause 2 and 3 and the Cheaper by the Dozen movies.