You know that hot, sticky feeling when you were a kid, the sun blazing down like a cosmic microwave, and all you wanted was to turn your backyard into a watery warzone? Well, you can thank one man for that: Lonnie Johnson. He’s the genius who gave us the Super Soaker, the weapon of choice for every kid who ever wanted to rule the neighborhood from a slip-n-slide throne. But here’s the kicker: he didn’t even invent it to be a toy. He was a rocket scientist at NASA, tinkering with a heat pump that used water, and accidentally shot a stream across his bathroom. Oops—and hooray for humanity.
So, how much is this accidental water-flinging fortune worth in 2024? Word on the street—and by street, I mean the very serious Forbes list—is that Lonnie’s net worth sits somewhere around $360 million. That’s a lot of Super Soaker refills. To put it in perspective, that’s roughly 72 million water balloons, or enough cash to buy a small, waterlogged island. But don’t cry for him; he didn’t just get rich off backyard battles. He’s been stacking cash for decades, and his story is weirder and funnier than you’d expect.
The Rocket Scientist Who Hated Getting Wet (At First)
Imagine this: it’s 1982, and Lonnie is a 33-year-old engineer building a heat pipe for NASA’s Galileo mission to Jupiter. He rigs up a nozzle to test a cooling system, pulls the trigger, and—pshhooo—a jet of water hits his bathroom mirror so hard it bounces off and drenches his shirt. He didn’t yell “eureka!” He probably yelled “dang it, my laundry.” But instead of getting mad, he got curious. “That would make a killer toy,” he thought, right before wiping up the puddle.
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He spent the next seven years trying to sell the idea to toy companies. They all said no. “Too expensive,” they whined. “Kids don’t want a blaster that shoots eight feet.” Oh, how wrong they were. Finally, in 1989, a company called Larami took a chance. They renamed it the Super Soaker 50. In 1991, it became the top-selling toy in America. That’s right—a freakin’ water gun beat out Barbie and G.I. Joe. Kids were literally paying $10 to soak their siblings. The world changed forever.
Wait, He Didn’t Get All That Money?
Here’s where it gets juicy. When Larami was bought by Hasbro in 1995, Lonnie had a brilliant contract: he earned a royalty on every Super Soaker sold. But here’s the thing—Hasbro is a giant corporation with fancy lawyers. They argued that his patent wasn’t valid because of some technical loophole. They basically tried to say, “Hey, that’s not a heat pump, that’s a water gun. Different thing!” It took seven years of legal battles and a lot of expensive suits, but Lonnie won. In 2008, a court awarded him a massive lump sum for back royalties. We’re talking tens of millions, plus a continuing royalty deal. Cha-ching.
Dr. Johnson Speaks at SXSW Panel on Diversity | JTEC Energy
So, he didn’t just cash a check and disappear. He kept inventing. He’s got over 100 patents, including one for a solid-state battery that could make electric cars run for 1,000 miles. Seriously. He’s like the cool grandpa who built a death ray in the garage, but instead of destroying the world, he just wants to make your phone last forever. And he’s still at it, running his own company, Johnson Research and Development, in Atlanta. He’s probably inventing a way to water your lawn while you’re sleeping, because he can.
Let’s talk about the real joke: Lonnie Johnson is a Black engineer from Alabama who grew up during segregation, built a robot from scrap metal as a teenager, and then got rich by making kids squeal with joy. He didn’t even try to be a millionaire. He just wanted to cool a spacecraft. Meanwhile, other inventors are out here patenting scented toilet paper. Priorities, people.
Perseverance and prototypes | USPTO
What Does He Do With All That Money?
Does he have a pool shaped like a giant Super Soaker? Probably not. He’s a quiet guy who lives in a modest house in Atlanta. He drives a minivan. A minivan! With $360 million, he could buy a fleet of donut-shaped hovercrafts, but nope. He prefers to spend his cash on robotics and clean energy research. He wants to solve the world’s energy crisis. “I never did it for the money,” he once said. “I did it because I like solving problems.” Classic rocket-scientist talk. But hey, if I had that net worth, I’d at least buy a Super Soaker that fires actual diamonds.
And here’s the final surprise: he’s still not done. In 2023, he launched a new company called “Johnson Energy Storage” to revolutionize batteries. He also helped design a toy called the Super Soaker 100—a backpack blaster that shoots so hard it can knock a soda can off a fence. We’re not kidding. The man is 74 years old, and he’s still making things wet and wild. So next time you see a kid running through a sprinkler with a neon-pink Super Soaker, tip your hat to Lonnie. He turned a bathroom spill into a fortune, and he’s still laughing all the way to the bank—and the patent office.
Oh, and one more thing. He’s never actually used a Super Soaker himself in a fight. He says it’s because he doesn’t want to get wet. Classic.
