Shaggy: [Thinking they've discovered the Star Creature, Scrappy rushes in to capture the villain... while his teenage masters look on] ... Scrappy! Oh, no; it'll be awful for him!

Daphne: Right; poor Scrappy!

Shaggy: No, I meant for the Star Creature!

Scrappy-Doo: ...I got 'em! Oh boy, oh boy; Scrappy-Doo always gets his...

[notices he's apprehended the wrong suspect]

Scrappy-Doo: ... Ah - good evening, sir! Er, does the name "Star Creature" ring a bell?