It's not too late. The Justice Ducks and I can be one.
4 seconds sound clip from Darkwing Duck - Just Us Justice Ducks Part 2 (S1E21).
You can hear this line at 00:10:56.723 in the DVD version of the TV Series.
Quote context
[...]
- I'm a gipnoid, a slug, a spud-motherin' jackanape.
- Aw, come on. You're not a slug.
- Dad I gotta tell you something. The Justice Ducks...
- Were right, Gosalyn. Oh, if only I'd listened to the Justice Ducks. If only I'd accepted their help!
- Yeah, but the Fearsome Five...
- Were too much to handle on my own. I should've worked with the team.
- But, Dad, the team needs you.
- Think so? Of course they do.
- It's not too late. The Justice Ducks and I can be one.
- If we work together as a team, the Fearsome Five shall fall! Yes!
- That's what I've been trying to tell you. They've been captured!
- Oh, perfect. Some team they turned out to be. I guess I'll have to go save them.
[...]