Bob May: The Man Inside the Robot – The Untold Story of a Sci-Fi Icon
Bob May: The Man Behind the Machine
For generations of Lost in Space fans, the Robot was an unforgettable presence—waving its mechanical arms, warning of danger, and adding humor to the series. But while the voice of the Robot came from Dick Tufeld, the man physically inside the iconic suit was Bob May, an actor and stuntman whose career spanned decades in Hollywood.
Born in 1939, May was a Hollywood legacy—his grandfather was a Vaudeville performer, and his family had deep roots in show business. Though his most famous role was inside a robotic shell, his career was filled with fascinating behind-the-scenes stories that many fans might not know.
From Stunts to Sci-Fi Stardom
Bob May wasn’t originally cast as the Robot in Lost in Space (1965-1968). The role required someone small, agile, and able to withstand long hours in a heavy suit, which made him the perfect choice when the original actor struggled with the costume. Producer Irwin Allen, known for his larger-than-life approach to TV and film, picked May personally—impressed by his stunt work and willingness to endure discomfort.
The Robot costume weighed nearly 200 pounds and was hot, claustrophobic, and difficult to move in. May later joked that while others turned down the role because of the physical challenge, he enthusiastically said, “Of course, I’ll do it! I’m an actor!”
A Suit of Challenges
Being inside the suit was no easy task. May couldn’t see well through the helmet, making simple movements difficult. One of his most infamous moments came when he accidentally walked off a cliff during filming. In one scene, while backing away from an explosion, he miscalculated his steps and tumbled down a small ravine. Thankfully, he wasn’t seriously injured, but it added to the list of hazards he faced daily.
The show’s young star, Bill Mumy (Will Robinson), had immense respect for May, calling him a trooper who never complained, despite the grueling conditions. The Robot often had to perform elaborate movements, and May took great pride in the physical comedy and expressive gestures that made the character come to life.
Silent but Not So Silent
While Lost in Space fans recognize Dick Tufeld’s booming voice as the Robot, many don’t realize that Bob May spoke all of the Robot’s lines on set during filming. This helped the actors react properly to their mechanical co-star.
May had a great sense of humor and often improvised lines inside the suit, cracking up the cast and crew. According to Bill Mumy, sometimes May’s off-color jokes would cause bloopers, especially when the actors had to keep straight faces while interacting with the Robot.
Life After Lost in Space
After Lost in Space ended in 1968, Bob May continued working in Hollywood, often as a stuntman, extra, and behind-the-scenes crew member. His versatility led him to work on a variety of productions, from classic TV shows like The Time Tunnel and Batman to big-screen projects.
For years, he remained relatively unknown to the public. That changed in the 1990s when a resurgence of interest in Lost in Space brought him back into the spotlight. Fans were shocked to learn that the Robot had a real person inside it, and May became a beloved figure at sci-fi conventions, happily signing autographs and sharing stories.
He embraced the love from fans and once remarked, “I might have been inside a metal suit, but I felt the warmth of the fans every time I walked into a convention.”
Legacy of a Sci-Fi Icon
Bob May passed away in 2009 at the age of 69, but his legacy lives on. His work as the Robot in Lost in Space made him part of sci-fi history, and his dedication to his craft earned him a special place in fans’ hearts.
Though he was often hidden inside a costume, May’s energy, commitment, and humor made the Robot one of television’s most memorable characters. He wasn’t just a stuntman in a suit—he was an actor who brought the soul of the Robot to life.
So the next time you hear “Danger, Will Robinson!”, take a moment to remember Bob May—the man who made the machine move.
