Megavolt, the cad.
2 seconds sound clip from Darkwing Duck - Just Us Justice Ducks Part 2 (S1E21).
You can hear this line at 00:08:01.298 in the DVD version of the TV Series.
Quote context
[...]
- Ah... oh, no. Here comes Mr. Droopy Lids.
- But we need electricity to run the hospital.
- This situation calls for unique gizmo talents of GizmoDuck.
- Ignore this cur, O healing professionals.
- Oh, thank you, GizmoDuck. You're a true hero.
[...]