Slade Strikes Back - Return of the Duon

Darkwing and Edd find the intruder, who turns out to be Dr Neferious. It's here that DW learns more about Slade and Anti Cosmo, and then Neferious reveals that he and Slade and Anti Cosmo had rebuilt the Duon and launches it on Edd and DW. The two defeat the Duon and fly away to find the others....