1. The Bubbler

The Bubbler kidnaps the Shah of Shish-Ka-Bob and it's up to the Impossibles to rescue him.

2. The Shocking Electrical Monster

Dr. Shock uses his Master Mix Monster Machine to turn his assistant Igor into an electricity-absorbing monster.

3. The Spinner

The Spinner steals a $1,000,000 tiara.

4. The Perilous Paper Doll

The Paper Doll Man steals a top secret plan and is out to steal the second part.

5. The 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.

6. Beamatron

Beamatron steals a priceless painting from a ship.

7. The Burrower

The Burrower uses his burrowing machine to steal half a million dollars from the bank and dig ten miles down to his lair.

9. Timeatron

Timeatron uses his time cabinet to bring villains from the past to pillage for him.

10. Smogula

Smogula freezes the Impossibles and seals them within a cave, so they will not interfere with his plans to conquer Empire City.

11. The Alien Brain from Outer Space, Part 1

A giant alien brain arrives on Earth and captures Buzz and Frankenstein Jr.

12. The Sinister Speck

The Speck uses a formula to shrink himself in order to photograph top secret plans.

13. Fero, the Fiendish Fiddler

To get the Impossibles out of the way, Fero uses his fiddle to transport them to different planets.

14. The Alien Brain from Outer Space, Part 2

A giant alien brain arrives on Earth and captures Buzz and Frankenstein Jr.

15. Mother Gruesome

Mother Gruesome invents a machine that brings villainous storybook characters out of their stories to help her with her crimes.

16. Televisatron

Televisatron transports the Impossibles to different television shows.

17. U.F.O. Unidentified Fiendish Object

The alien Zargon unleashes his warrior Destructo to conquer Earth.

18. The Diabolical Dauber

The Dauber uses a special brush where anything he paints becomes real.

19. Aquator

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.

20. The 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.

21. The Wretched Professor Stretch

Professor Stretch causes havoc with his elastic abilities.

22. The Devilish Dragster

The Dragster has stolen a valuable item.

23. The Deadly Living Images

The Mad Inventor has invented the Double Identity Duplicator Projector to create living images he can control.

24. The Return of the Spinner

The Spinner returns and steals a priceless pooch.

25. Satanic Surfer

The Surfer takes pictures of a top secret submarine.

26. The Colossal Junk Monster

The Junk Man creates the Colossal Junk Monster in a plot to eliminate Frankenstein Jr.

27. The Puzzler

No synopsis available.

28. The Scheming Spraysol

Spraysol steals top secret documents.

29. The 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.

30. The Scurrilous Sculptor

The Sculptor turns people into statues.

31. The Artful Archer

The Archer steals a priceless violin and a million dollars.

32. The 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.

33. The Insidious Inflator

The Inflator creates giant balloon monsters to help him commit crimes.

34. The Dastardly Diamond Dazzler

The Diamond Dazzler steals a precious diamond in order to awaken the genie within.

35. The Birdman

Birdman and his robotic birds Vulturo, Rodantus, and King Condor abduct two astronauts and hold them for a ransom of $1,000,000.

36. The Return of the Perilous Paperman

The Paper Doll Man returns and causes trouble.

37. Cronella Critch the Tricky Witch

A witch named Cronella Critch robs a charity for orphans party.

38. The 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.

39. The Terrible Twister

The Twister is stealing precious jewels.

40. Professor Stretch Bounces Back

Professor Stretch returns and creates a rubber monster to help him.

41. The Manchurian Menace

No synopsis available.

42. The Terrifying Tapper

The Tapper transmits himself over phone lines.

43. The Anxious Angler

The Angler steals secret space research.

44. The 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.

45. The Rascally Ringmaster

The Ringmaster puts on a circus and robs from those who attend.

46. Billy the Kidder

Billy the Kidder is a cowboy who rides a robotic horse and plans to rob the U.S. Mint.

47. The Monstermobile

The Mad Inventor has invented the Monstermobile and uses its many gadgets to commit crimes.

48. The Fiendish Dr. Futuro

Dr. Futuro comes from the 40th century to the twentieth century to steal a million dollar gold brick.

49. The Crafty Clutcher

The Clutcher uses an invention that brings his gloves to life.

50. The 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.

51. The Infamous Mr. Instant

Mr. Instant uses his insta-gun that can make anything in an instant.

52. The Bizarre Batter

The Batter kidnaps a baseball star and holds him for ransom.

53. The Spooktaculars

Dr. Spectro creates three giant ghoulish ghosts in order to take over Penciltrainia.

54. The Not So Nice Mr. Ice

Mr. Ice and his henchman Freezer Freezer freeze the city in order to take it over.