Dr. Viper is one of the principal antagonists in SWAT Kats: The Radical Squadron, particularly serving as the secondary antagonist.
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- SWAT Cats characters
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- Sonja's Adventures villains
- Bella Silverstar2's Adventure Villains
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- Connor Lacey's Adventures Villains
- The Spring City Adventure Crew's Adventures Villains
- The Toa's Adventures Villains
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- Wild Kratts' Adventures Villains
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Dr. Viper
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