Mystery Inc. must save Coolsville from an attack of past unmasked monsters brought to life by an evil masked figure trying to "unmask" the gang.

Shaggy: [Scooby slaps him] I needed that.
[Scooby slaps him again]
Shaggy: I needed that too.
[Scooby punches him]
Shaggy: [shouts] You're pushin' your luck Scoob.
Shaggy: We're gonna die!
Daphne: Think positive!
Shaggy: We're gonna die quickly!
Shaggy: This is tied for the most terrifying day of my life!
Velma: Tied with what?
Shaggy: Every other freaking day of my life!
[after releasing herself and friends from the trap using make-up accessories]
Daphne: I enjoy being a girl.
Daphne: Fred, do you think that I'm just a pretty face?
Fred: No. I mean... yes. I mean *not fat*. Definitely *not fat*. Is this sort of you're looking for?
Daphne: Fat? Why did you even use that word?
Buttercup Scout: Would you like to buy some cookies?
Man in Suit: Have you heard the good news?
Scooby-Doo: Yeah. There's cookies.
Old Man Wickles: Darn bushes howling at me again.
Shaggy: Dig this, daddy-o. It's a real gas.
Daphne: [after thinking of a clever retort to some jeering kids] Hey! Shut up!
Shaggy: [Scooby and Shaggy are surrounded by monsters] We have to remain calm.
[Scooby screams]
Shaggy: CALM SCOOBY DOO! YOU'RE NOT BEING CALM!
[Scooby slaps him]
Shaggy: I needed that!
[Scooby slaps him again]
Shaggy: I needed that too!
[Scooby punches him]
Shaggy: You're pushing your luck Scoob!
Daphne: They're cheering for us again.
Fred: I always thought that was the best thing in the world. I guess I found something a bit better.
[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: Freddy, are you okay? Wanna talk?
Fred: Talkin's for wimps.
[Fred gets out of the mystery machine]
Fred: It's time for action.
Old Man Wickles: As if you getting the lead in "My Fair Lady" wasn't enough!
Jacobo: I was an excellent Eliza! You were too "acty".
Old Man Wickles: And stealing my tator tots?
Jacobo: You kept saying you felt puffy!
Fred: This is bad.
Shaggy: No doubt.
Fred: Shaggy?
Shaggy: Yeah?
Fred: Who's driving?
Shaggy: Uhh...
[the gang looks back to see who is driving with no one there but Scooby in the passenger seat]
Scooby-Doo: Rello!
Fred: They're totally having a montage in there without us.
Scooby-Doo: [Scooby has become smart and Shaggy is a big jock] This Schwartzenagren oaf almost destroyed us.
Shaggy: Ha ha, go boom!
Scooby-Doo: Oh you are embarrasing.
Shaggy: [trying to act like Fred, Daphne, and Velma and reading fax paper upside down] What markings are these?
Fred: [turns fax right side up] Words
Shaggy: Ah, words
Shaggy: [Shaggy and Scooby trying to act like real spies] Scoob, what's your conclusion?
Scooby-Doo: [holds up a sketch of a bunny] Bunny!
Heather: It's my job to unmask those who pretend to be who they're not.
Daphne: Unmask those? You sound like...
Heather: Sound like who?
Daphne: The Evil-Masked Guy. But you knew that. Because just as you know I'm standing here you know that I know who you know you are, which is him who's a her which is you.
Heather: Oh. Now I see what you're doing for the gang. You're in charge of incoherent bubbling.
Evil Masked Figure: Mystery Incorporated, once again you have proven useless before my power. Because of you soon Coolsville will be mine
Heather: darn it! thanks alot, the scoop of the night gone. can't you do anything right
[Daphne has made Velma look sexy in preparation for Patrick coming over]
Velma: Who's your mommy...
Patrick: Who's my... my mommy?
[Velma is wearing an orange-leather catsuit and trying to walk in a sexy manner]
Patrick: Uh, Velma? Do you have to go to the bathroom?
Velma: No, I can't in this outfit.
Daphne: Where is it?
Velma: [mumbling] I gave it to Shaggy and Scooby.
Fred: Ha, that's funny. It sounded like you said you gave it to Shaggy and Scooby.
Fred: I'm affraid. I'm a wimp, huh?
Daphne: That doesn't make you a wimp. Makes you human.
Ned: But we cuddled!
Shaggy: Run, Scoob, it's a skele-thingy!
Shaggy: Hey guys, Scooby's feelin kinda like he's got rabies. We're just gonna go outside and get some fresh air.
Black Knight Ghost: [after being electrocuted] Oh crap.
Fred: And the real identity of Ned is...
[Fred pulls Ned's Hair]
Ned: Ow!
Fred: [angrily] Ned!
Daphne: Everyone has flaws. You just have to make sure the other person doesn't see them.
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.
[in the monster hide]
Evil Masked Figure: Soon your friends will be dead... And Coolsville destroyed... My revenge will be final... And there's nothing you can do about it!
Miner 49er: I'll get you, you varmints!
Black Knight: [after being electrocuted] Oh, crap!
Fred: Hey! He said my thing that I say!
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.
Scooby-Doo: [about to put the control panel on monster maker] Rooby... Dooby... Doo!
Shaggy: [a potion has given Shaggy muscles] I'm buff!
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.
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.
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?
[Scooby and Shaggy start eating the ghost]
Cotton Candy Glob: NO! I'll give you cavities.
Fred: You can't fool me with that macho facade. You're just afraid to show your sensitive side.
Black Knight Ghost: Oh... you've touched my inner child... and he's REALLY MAD!
Patrick: Velma, let go of the grate!
Velma: So I can fall to my death?
Patrick: So I can pull you up! You gotta trust me!
Velma: No! I only trust the facts and all the facts say that you're the evil masked figure!
Patrick: What does your heart say?
Velma: I don't know, it's beating too loud for me to hear!
Patrick: Look deeper, you gotta trust me!
[pulls her up]
Evil Masked Figure: You can't do this to me! Who do you think you are?
Scooby-Doo: Scooby... dooby... doo.
[Scooby puts the control panel on the thing and presses the button]
Evil Masked Figure: No!
Shaggy: [about Old Man Wickles] Here's a clue for ya, Scoob - that guy's wearing his freak hat 24/7.
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]