“Megaswamp City” was a vague idea of Dr. Viper’s. He wanted to use his erupting spore pod atop Megakat Tower to transform Megakat City into a swamp (ruled by him, of course). He was near tears as he described its potential “beauty.” He was stopped by the SWAT Kats when Razor dumped a load of MASA super rocket coolant onto the building, freezing the spore pod solid before it could burst. A slightly more successful variation of this plan was implemented by Viper later, although this time he called it “Mutation City.”