Matthew Lillard credited as playing...
Shaggy
- Shaggy: [to Patrick] Patrick, I'd love to do this all night, and something tells me you would, but it's time we make like your personality, and split.
- Shaggy: [Shaggy and Scooby trying to act like real spies] Scooby-Doo, what's your conclusion?
- Scooby-Doo: [holds up a sketch of a bunny] Bunny!
- Scooby Brainiac: [Scooby has become smart and Shaggy is a big jock] This Schwartzenegian oaf almost destroyed us.
- Shaggy: Ha ha, go boom!
- Scooby Brainiac: Oh, you are embarrasing.
- [Shaggy and Scooby start playing with the control panel, which makes a beat with its noises]
- Shaggy: [rapping] My name is Shaggy Fresh, and I'm the best at solving crimes. When the monsters see my face, they start to scream and shake like a girl with Justin Timberlake!
- Scooby-Doo: [rapping] My name is Scooby-Fresh. Raca-re-ra-ra-roo-ra-ree. Araca-ra. A-re-ra-roo-ree. A-roo-ra-racaraca-a-re-ra-roo.
- Shaggy, Scooby-Doo: We're the greatest detectives! We're the greatest detectives! We're the greatest detectives!
- Scooby-Doo: Re're the reatest retectives!
- Daphne: Guys, come on remember what I told you?
- Shaggy: Never pick your nose in public.
- Daphne: No, but that's... good too.
- Scooby-Doo: Rimage ris everything.
- Daphne: Yes, image is everything. Okay the whole city is watching, so try to keep a brave face.
- Shaggy: Huh?
- Daphne: Guys, they're costumes.
- Shaggy: She's right, Scoob, up close they look totally fake.
- Velma: [Velma, Shaggy and Scooby-Doo come across a pair of silhouettes belonging to ghouls] The skeleton men.
- Shaggy: [Scooby-Doo reacts by abruptly farting] He does that when he gets nervous.
- Scooby-Doo: [Fanning a paw behind his butt] Rorry.
- Shaggy: Hey guys, Scooby's feelin kinda like he's got rabies. We're just gonna go outside and get some fresh air.
- Cotton Candy Glob: You never should have locked those locks. Now you're stuck in here with me. The Cotton Candy Glob!
- Shaggy: Cotton Candy Glob?
- Cotton Candy Glob: Hahaha! Yes.
- [Scooby and Shaggy start eating the ghost]
- Cotton Candy Glob: No! I'll give you cavities!
- Patrick: I got to act tough or these people will beat up me a lot.
- [Shaggy and Scooby start laughing]
- Patrick: What? Do you think I'm kidding?
- Shaggy: Uhh?
- Scooby-Doo: No! No?
- Patrick: [starts laughing] See!
- [Shaggy and Scoob laugh again, then when Shaggy and Scoob about to leave]
- Patrick: Boo!
- [starts laughing again]
- Shaggy: Come on Scoob.
- [bumps into Miner 49er]
- Shaggy: Miner... 40... 9er.
- Miner 49er: HAHAHAHAHAHA!
- [breathes fire at Shaggy and Scooby]
- Miner 49er: [chasing Shaggy and Scooby] I'll get you, you varmints.