1. Frienemy of the State

When Talon is caught, Claw replaces him with Penny's friend Mal.

2. MADhenge

When Penny interferes with Talon's attempt to collect cosmic energy from Stonehenge, both Penny and Talon are given cosmic powers.

3. The Claw Who Stole Christmas

Claw sets out to end Christmas by unleashing cheer-destroying nanobots at a tree lighting ceremony.

4. The Thingy

Talon is sent to the North Pole to acquire a newly-discovered, unclassified, biological organism.

5. The Talon-ted Mr. Colin

Talon infiltrates HQ while undercover, hoping to get HQ's missile defense codes from Kayla.

7. Anti-gravity

MAD attempts to steal a gravity nullifying device.

8. Too Many Talons

Claw sends Talon to steal a duplicating device, which Talon uses to duplicate himself.

9. Star Power

MAD begins stealing the "star power" from celebrities.

10. Panda-monium

Talon impersonates a panda to disrupt peace talks between two countries.

11. Under the MADnight Sun

MAD tries to mine a highly magnetic ore from the forest where Gadget and Penny are camping.

12. Skyrates Off the Starboard Bow!

MAD sets out to hijack Sir Owen Barnstormer's new Ultra Blimp Mark II and take its cold fusion power source.

13. Fate it ‘til You Make it

MAD tries to the Oracle of Delphi so they can use her ability to see the future.

14. Once Upon a Screentime

MAD sends out a hypnotizing image on every screen in the world.

15. The MADstache of Professor Coin

Talon disguises himself as Penny, while making Penny look like a MAD agent.

16. MADthuselah

Claw develops a device to make people old, making himself younger by comparison. Penny becomes a senior during a fight with Talon.

17. The Heir Affhair

Talon kidnaps a wealthy old lady and tries to convince her to make him her heir.

18. Parched Nemesis

MAD steals all the water in Metro City.

19. Trees Company

The MAD Weed-whacko has been rehabilitated, but Claw wants him to destroy Central Park in New York.

20. MADtrack

Gadget is assigned to transport Jacques Crankcase to prison, via a hover-train.

21. The Missionball Ball

MAD infiltrates HQ's Missionball Ball with a weapon that forces people to dance.

22. Tell Me What Sphinx

MAD attempts to find a superweapon in the Great Sphinx of Giza.

23. Harmageddon

MAD tries to redirect a comet so that it crashes into Metro City.

24. Do No Arm

Penny breaks her arm and is sent to a hospital where a MAD plot is afoot.

25. Inspector Gadget Goes to Jail

When Talon frames Gadget for shoplifting and gets him thrown in prison, Penny must break the rules to get him out.

26. We Had a Really Good Title for This One... But We Forgot It

MAD uses a memory eraser device to try and defeat Gadget.