
Two socially awkward teens, Gary and Wyatt, constantly struggle to be accepted by their classmates. Desperate for popularity, they use a computer program to design a perfect woman, who materializes as the beautiful Lisa. She thrusts the boys into adult situations, forcing them to act like real men and boosting their confidence.
Does Weird Science have end credit scenes?
No!
Weird Science does not have end credit scenes. You can leave when the credits roll.
Explore the complete cast of Weird Science, including both lead and supporting actors. Learn who plays each character, discover their past roles and achievements, and find out what makes this ensemble cast stand out in the world of film and television.

Robert Downey Jr.
Ian

John Kapelos
Kandy Bar Owner

Bill Paxton
Chet

Anthony Michael Hall
Gary

Jill Whitlow
Perfume Salesgirl

Britt Leach
Al

Ivor Barry
Henry

Robert Rusler
Max

Wallace Langham
The Weenies

Vernon Wells
Lord General

Suzanne Snyder
Deb

Todd Hoffman
The Weenies

Jennifer Balgobin
Biker Girl

Kelly LeBrock
Lisa

Judie Aronson
Hilly

Michael Berryman
Mutant Biker

Kevin Thompson
Blob Operator

Jeff Jensen
Metal Face

Pamela Gordon
Wyatt's Mother

Renee Props
The Weenies

Joe Gieb
Blob Operator

Mikul Robins
The Weenies

Chino 'Fats' Williams
Bar Patron

Doug MacHugh
Wyatt's Father

Kym Malin
Girl Playing Piano

Prince Hughes
Party Guest

Rock A. Walker
Policeman

Fred D. Scott
Bar Patron

Ann Coyle
Carmen

Mary Steelsmith
Girl in Bathroom

Rick LeFevour
Policeman

Ilan Mitchell-Smith
Wyatt

Johnny Timko
The Weenies

Barbara Lang
Lucy

Suzy J. Kellems
Gymnast

Vince Townsend Jr.
Bar Patron

Theodocia Goodrich
Lingerie Saleswoman

Darren Harris
The Weenies

Michael Cramer
The Weenies

D'Mitch Davis
Bartender

Robin Frohman
Girl in Bathroom

Alison Carole Lowe
Girl in Upside Down Bathroom

James Huffman
Young Kid at Party (uncredited)

Michael K. Washko
Mall Shopper (uncredited)
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Challenge your knowledge of Weird Science with this fun and interactive movie quiz. Test yourself on key plot points, iconic characters, hidden details, and memorable moments to see how well you really know the film.
What are the first names of the two teenage protagonists?
Gary and Wyatt
Mark and Kyle
Tom and Jerry
Sam and Alex
Show hint
Read the complete plot summary of Weird Science, including all major events, twists, and the full ending explained in detail. Explore key characters, themes, hidden meanings, and everything you need to understand the story from beginning to end.
Gary Wallace [Anthony Michael Hall] and Wyatt Donnelly [Ilan Mitchell-Smith] are the quintessential nerd duo at Shermer High School, navigating daily humiliations at the hands of the senior crowd led by Ian and Max. The two friends pore over their crushes, Deb and Hilly, feeling stuck in a cycle of awkward moments and teased potential. The social gap between them and the popular crowd feels immense, and both boys privately dream of a more exciting, confident life. When their weekend plans loosen up after a series of petty embarrassments at the mall and in the halls, the urge for a drastic change becomes irresistible.
In a bid to rewrite their fate, Gary and Wyatt hatch a plan sparked by a wild combination of science and fantasy. Fueled by the 1931 film Frankenstein and a surge of reckless curiosity, they decide to build a “virtual woman” using Wyatt’s computer—an amplified, artificial partner who could erase the age-old ache of rejection and quiet their inner doubts. The project begins as a cautious experiment but quickly grows into something bolder, as they infuse their creation with everything they can conceive of to fashion the perfect dream companion.
What begins as an isolated experiment takes a dramatic turn when they hook electrodes to a doll and tamper with a government computer system for more power. A sudden power surge unleashes Lisa Lisa, a beautiful, intelligent, and distinctly self-assured woman with reality-bending powers. Lisa materializes not just as a pretty face but as a force that can bend the world to fit Gary and Wyatt’s desires. She conjures a pink 1959 Cadillac Eldorado convertible to whisk the boys away to a blues dive bar in Chicago, and she uses her powers to manufacture fake IDs, giving them a taste of an adult, carefree nightlife they’d previously only imagined.
When they return home, the celebration is short-lived. Chet Chet, Wyatt’s older brother, confronts them with cash demands, and Lisa agrees to keep her existence a secret, at least for the moment. Yet Lisa quickly discerns a deeper truth: Gary and Wyatt are good-hearted boys who need a proper outlet to unwind and loosen their rigid nerves. Together they attempt to recapture the same magic in a more controlled way, but the plan quickly spirals beyond their intentions. A humiliating incident at the mall escalates tensions with their tormentors, and Lisa orchestrates one more bold move—she lets the bullies know there will be a party at Wyatt’s house, then cruises off in a gleaming Porsche to set everything in motion.
The party scene becomes a churning mix of chaos and spectacle. Lisa meets Gary’s parents, Al and Lucy, confronting them with her blunt, unfiltered perspective. Her memory-altering prowess reshapes the adults’ recollections: Lucy forgets the conflict altogether, while Al forgets that he even has a son. The Donnelly house fills with guests, music, and mischief, and Gary and Wyatt end up hiding in the bathroom, overwhelmed but determined to seize a moment of fun. Lisa explains to them that their original plan to recreate Lisa’s creation was flawed: they forgot to connect the doll properly, and a dangerous chain reaction ensues.
A chilling accident follows when, with the magazine page as the focus, a Pershing II missile suddenly erupts through the floor and ceiling, introducing a literal threat into the party. The danger is further amplified when a gang of mutant bikers arrives to terrorize the guests, a wild, destabilizing force that tests the boys’ nerves and courage. The arrival of the bikers shifts the dynamic from one of social embarrassment to high-stakes chaos, but the chaos also pushes Deb and Hilly toward Gary and Wyatt as they face fear and danger together.
As the dawn approaches, Deb and Hilly are freed from the danger and, in the aftermath, the emotions shift in surprising ways. The bikers depart, and the next morning reveals a house in disarray: a snowstorm in Wyatt’s room, the eerie missile, and a sense that Lisa’s work—like any powerful magic—has its own consequences. Lisa then guides the boys to escort the girls home, and the two couples grow closer as mutual admiration and affection surface. The day ends with a quiet moment of connection: Deb and Hilly reciprocate the boys’ feelings, and Lisa reassures them that their transformation has accomplished its purpose.
The story’s resolution comes with a twist of comic and surreal revelation. Back at home, Chet is found transformed into a peculiar, talking toad-like creature, offering a humorous reminder of the odd, unpredictable changes that have occurred. Lisa consoles the boys, explaining that Chet will return to his normal self, and then, with a tender farewell, she dematerializes. The net effect of her presence is to tuck the weekend’s upheavals back into a sense of normalcy—the house is cleaned, and the house’s atmosphere returns to familiar calm as Wyatt’s parents return, unaware of anything extraordinary that happened. In the ending flash, Lisa reappears in a new, permanent role—she becomes the gym teacher at Shermer High School, a subtle nod to how transformation can reshape everyday life, even if the surface appears unchanged.
What remains is a story about daring to dream beyond social labels, about friendship that pushes past fear, and about the uneasy balance between ambition and responsibility. It is a tale of two underdogs who find confidence not by erasing their humility but by discovering a new version of themselves—one that still values their friends, their crushes, and the world they inhabit. And while Lisa’s presence is spectacular and transformative, the enduring message is that personal growth comes from within and from the courage to take a chance on a future that once seemed out of reach.
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