Last episode: Unlikely Alloys
The Swat Kats stop the Metallikats from robbing the Megakat City Mint, and in the process the two robot gangsters are severely injured, Molly moreso than Mac. When Mac finds out about Dr. Lieter Greenbox's new invention, the Micro-Brain Repair Unit which can fix anything, he immediately takes himself and Molly to Greenbox's lab and steals the device. The Metallikats use it to repair themselves, but in the process the device becomes contaminated by their criminal programming. Achieving sentience, it names itself Zed and proceeds to go on a citywide rampage, assimilating all manner of metal and machinery (including Mac!) onto itself, constructing an ever-growing armored shell. Naturally, only the Swat Kats can stop Zed, with some help from a vengeful Molly. Unfortunately, Zed's next stop is Puma-Dyne, where it plans to get its hands on the Mega-Beam laser weapon. Worse, Greenbox has become so impressed by what his genius has wrought that he's gone completely crazy and is doing everything he can to ensure that Zed's goals are met.
Aired: Saturday December 24, 1994

22. The Dark Side of the Swat Kats	Dec 10, 1994	3 Reviews	9.69
21. Volcanus Erupts! / The Origin of Dr. Viper	Nov 26, 1994	1 Review	9.19
20. Caverns of Horror	Nov 19, 1994	0 Reviews	9.91
19. The Deadly Pyramid	Nov 12, 1994	1 Review	9.89

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  external: Swat Kates at tvrage Nov 5, 2006 (Score: 20)
  
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  external: Official page Nov 5, 2006 (Score: 20)
  

Tress MacNeille - voice of Callie Briggs Jim Cummings - voice of Mayor Manx / Enforcer Sergeant Barry Gordon - voice of Razor (Jake Clawson) Gary Owens - voice of Commander Ulysses Feral Lori Alan - voice of Lt. Felina Feral Candi Milo - voice of Ann Gora Charlie Adler - voice of T-Bone (Chance Furlong) / Murray / Zed / Additional Voices