I am the terror that flaps in the night.
3 seconds sound clip from Darkwing Duck - Just Us Justice Ducks Part1 (S1E20).
You can hear this line at 00:03:05.377 in the DVD version of the TV Series.
Quote context
[...]
- Aha! Megavolt, the most dangerous criminal ever, is sabotaging the St. Canard Power Company.
- Well, come along. We'll have our date after you watch me heroically whomp a major villain.
- Don't worry. Just zap the bad guys into pudding.
- I love the smell of voltage in the evening.
- I am the terror that flaps in the night.
- Stand back. You might get some blood on ya.
- I am the single career man all women want to date.
- No, I'm Quackerjack. You are Darkwing Duck.
- It's Quackerjack, the most danger... the other most dangerous criminal ever!
[...]