The final installment finds Marty digging the trusty DeLorean out of a mineshaft and looking for Doc in the Wild West of 1885. But when their time machine breaks down, the travelers are stranded in a land of spurs. More problems arise when Doc falls for pretty schoolteacher Clara Clayton, and Marty tangles with Buford Tannen.
Dr. Frankenstein and his monster both turn out to be alive after being attacked by an angry mob. The now-chastened scientist attempts to escape his past, but a former mentor forces him to assist with the creation of a new creature.
Eighties teenager Marty McFly is accidentally sent back in time to 1955, inadvertently disrupting his parents' first meeting and attracting his mother's romantic interest. Marty must repair the damage to history by rekindling his parents' romance and - with the help of his eccentric inventor friend Doc Brown - return to 1985.
Dr. Laurence, a once-respectable scientist, begins to research the origin of the mind and the soul. The science community rejects him, and he risks losing everything for which he has worked. He begins to use his discoveries to save his research and further his own causes, thereby becoming ... a mad scientist, almost unstoppable.
A renegade federal agent uses a new drug to create an army of unbeatable warriors.
A scientist working on cures for rare afflictions, such as a bone softening agent made from molds to allow him to correct the spinal deformity of his nurse, finds the physical causes of lycanthropy in wolf-man Larry Talbot and of vampirism in Count Dracula, but himself becomes afflicted with homicidal madness while exchanging blood with Dracula.
A mad scientist crosses plants with people, and the results wind up in a sideshow.
A busty Batwoman enlists her beauteous bevy of Batgirls to help her regain a mad scientist's invention–an atom bomb made from a hearing aid–before costumed ne'er-do-well Rat Fink can glom onto it for his own purposes.
A mad scientist unleashes his master plan: to transform himself into a mutated walking catfish, and gain revenge on those who have spurned him. His plans go wrong, and he becomes tempted to kidnap a nubile young woman to similarly transform her so that he can breed.
To carry on his important work the ego-maniacal scientist Dr Kelly must obtain another hand… a hand which begins to take on a life of its own.
Thelma and Patsy find themselves in a spooky house inhabited by a nut who is a mechanical genius and has made a robot who does everything. The inventor manipulates the robot's control board from a hidden room. The girls are soon in a panic. Patsy gets into an argument with the robot and loses the match of wits. Blackie Burke, an escaped convict, is using the house as a hideout, and this adds to the problems the girls already have.
The rats and mice, made intellectually superior in the original Secret of N.I.M.H., return to Thorn Valley to groom their destined leader - young Timmy Brisby.
He was supposed to become the next step of human evolution - a man revolts against being turned into a cyborg.
Mad scientist Dr. Goldfoot has invented an army of bikini-clad robots programmed to seek out wealthy men and charm them into signing over their assets. Secret agent Craig Gamble and millionaire Todd Armstrong set out to foil his fiendish plot.
Dr. John Garth conducting an innovative medical experiment aimed at prolonging life and combating aging. The experiment takes an unexpected turn, placing the doctor in a confrontation with the ethics of his work and the consequences of his research.
Dr. Leon Kravaal develops a potential cure for cancer, which involves freezing the patient. But an experiment goes awry when authorities believe Kravaal has killed a patient. Kravaal freezes the officials, along with himself. Years later, they are discovered and revived in hopes that Kravaal can indeed complete his cure. But human greed and weakness compound to disrupt the project.
Dr. Henryk Savaard is a scientist working on experiments to restore life to the dead. When he is unjustly hanged for murder, he is brought back to life by his trusted assistant. Re-animated he turns decidedly nasty and sets about murdering the jury that convicted him.
Mad scientist brings his dead mad scientist grandfather back to life and makes a Frankenstein-type monster out of him.
A scientist keeps his wife young by killing, stealing the bodies of, and taking the gland fluid from virgin brides.
Two robbers on the run end up in the clutches of a doctor who experiments on people to navigate the afterlife. What seems to be an innocuous foray into a scientific and existential revolution for humanity soon takes a turn for the worse.