Swat Kats: The Radical Squadron

The Origin of Dr. Viper (2x10)

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Dr. N. Zyme and his colleague Dr. Elrod Purvis co-develop Viper Mutagen 368, a regenerative growth formula derived from snake DNA. When Zyme reveals his intention to donate the formula to the city, the greedy Purvis attempts to steal it to sell to the highest bidder. In the process however, he ends up spilling it on himself and seems to die, but is soon revived as the twisted mutant Dr. Viper! And when Viper hatches a scheme to mutate Zyme, Mayor Manx, and Callie Briggs