1The Bubbler
The Bubbler kidnaps the Shah of Shish-Ka-Bob and it's up to the Impossibles to rescue him.
2The Shocking Electrical Monster
Dr. Shock uses his Master Mix Monster Machine to turn his assistant Igor into an electricity-absorbing monster.
3The Spinner
The Spinner steals a $1,000,000 tiara.
4The Perilous Paper Doll
The Paper Doll Man steals a top secret plan and is out to steal the second part.
5The Spyder Man
Professor Conroy and Buzz unveil the blueprints for the Spy Detector XK-00-7 at a Maximum Security Building. Unfortunately, the blueprints are targeted by the Spyder Man.
6Beamatron
Beamatron steals a priceless painting from a ship.
7The Burrower
The Burrower uses his burrowing machine to steal half a million dollars from the bank and dig ten miles down to his lair.
8The Menace from the Wax Museum
Upon an encounter with Buzz at the wax museum, Mr. Menace uses his monsters Godzonka, Gorillis and Cyclaws in an attack upon San Francisco.
9Timeatron
Timeatron uses his time cabinet to bring villains from the past to pillage for him.
10Smogula
Smogula freezes the Impossibles and seals them within a cave, so they will not interfere with his plans to conquer Empire City.
11The Alien Brain from Outer Space, Part 1
A giant alien brain arrives on Earth and captures Buzz and Frankenstein Jr.
12The Sinister Speck
The Speck uses a formula to shrink himself in order to photograph top secret plans.
13Fero, the Fiendish Fiddler
To get the Impossibles out of the way, Fero uses his fiddle to transport them to different planets.
14The Alien Brain from Outer Space, Part 2
A giant alien brain arrives on Earth and captures Buzz and Frankenstein Jr.
15Mother Gruesome
Mother Gruesome invents a machine that brings villainous storybook characters out of their stories to help her with her crimes.
16Televisatron
Televisatron transports the Impossibles to different television shows.
17U.F.O. Unidentified Fiendish Object
The alien Zargon unleashes his warrior Destructo to conquer Earth.
18The Diabolical Dauber
The Dauber uses a special brush where anything he paints becomes real.
19Aquator
Aquator has stolen a secret formula from a scientist who is friends with Big D and shrinks himself to microscopic size in order to get all the microscopic creatures to become large.
20The Unearthly Plant Creatures
Plant Man thaws the last three prehistoric plants (the Carnivorous Chewer, the Creeping Crusher and the Fire-Breathing Snapdragon) from a glacier and then sprays them with his Obedience Ray in a plot to eliminate Buzz and Frankenstein Jr.
21The Wretched Professor Stretch
Professor Stretch causes havoc with his elastic abilities.
22The Devilish Dragster
The Dragster has stolen a valuable item.
23The Deadly Living Images
The Mad Inventor has invented the Double Identity Duplicator Projector to create living images he can control.
24The Return of the Spinner
The Spinner returns and steals a priceless pooch.
25Satanic Surfer
The Surfer takes pictures of a top secret submarine.
26The Colossal Junk Monster
The Junk Man creates the Colossal Junk Monster in a plot to eliminate Frankenstein Jr.
27The Puzzler
28The Scheming Spraysol
Spraysol steals top secret documents.
29The Incredible Aqua-Monsters
Buzz and Frankenstein Jr. guard the Navy's new Hydrotomic Submarine to prevent Dr. Hook and his aquatic monsters from stealing it.
30The Scurrilous Sculptor
The Sculptor turns people into statues.
31The Artful Archer
The Archer steals a priceless violin and a million dollars.
32The Gigantic Ghastly Genie
Zorbo the Great creates a genie and plans to use its three wishes in order to defeat Frankenstein Jr. and conquer the world.
33The Insidious Inflator
The Inflator creates giant balloon monsters to help him commit crimes.
34The Dastardly Diamond Dazzler
The Diamond Dazzler steals a precious diamond in order to awaken the genie within.
35The Birdman
Birdman and his robotic birds Vulturo, Rodantus, and King Condor abduct two astronauts and hold them for a ransom of $1,000,000.
36The Return of the Perilous Paperman
The Paper Doll Man returns and causes trouble.
37Cronella Critch the Tricky Witch
A witch named Cronella Critch robs a charity for orphans party.
38The Invasion of the Robot Creatures
Sertano the Satellite King, an alien from Galaxy X, uses a gravity ray in order to get Earth to surrender. Buzz and Frankenstein Jr. must defeat Sertano's robots in order to defeat him.
39The Terrible Twister
The Twister is stealing precious jewels.
40Professor Stretch Bounces Back
Professor Stretch returns and creates a rubber monster to help him.
41The Manchurian Menace
42The Terrifying Tapper
The Tapper transmits himself over phone lines.
43The Anxious Angler
The Angler steals secret space research.
44The Mad Monster Maker
To perform a crime wave in London, Baron Von Ghoul creates robotic versions of the horror movie monsters the Electroflying Firefly, the Menacing Mummy, and the Wicked Werewolf.
45The Rascally Ringmaster
The Ringmaster puts on a circus and robs from those who attend.
46Billy the Kidder
Billy the Kidder is a cowboy who rides a robotic horse and plans to rob the U.S. Mint.
47The Monstermobile
The Mad Inventor has invented the Monstermobile and uses its many gadgets to commit crimes.
48The Fiendish Dr. Futuro
Dr. Futuro comes from the 40th century to the twentieth century to steal a million dollar gold brick.
49The Crafty Clutcher
The Clutcher uses an invention that brings his gloves to life.
50The Pilfering Putty Monster
Mr. Menace uses his putty monster to steal a $1,000,000 coin collection and even kidnaps Buzz. It is up to Frankenstein Jr. to rescue Buzz and defeat Mr. Menace.
51The Infamous Mr. Instant
Mr. Instant uses his insta-gun that can make anything in an instant.
52The Bizarre Batter
The Batter kidnaps a baseball star and holds him for ransom.
53The Spooktaculars
Dr. Spectro creates three giant ghoulish ghosts in order to take over Penciltrainia.
54The Not So Nice Mr. Ice
Mr. Ice and his henchman Freezer Freezer freeze the city in order to take it over.