Will Forte credited as playing...
Shaggy Rogers
- Shaggy Rogers: I guess our new movie is an origin story.
- Scooby-Doo: Every hero should have one!
- Shaggy Rogers: I want the Rock to play me!
- Scooby-Doo: ...That'll never happen.
- Shaggy Rogers: Drop some F-bombs!
- Blue Falcon: Hey man, whoa, let's keep it PG!
- Shaggy Rogers: No! Falcon bombs!
- [last lines]
- Velma Dinkley: [after being informed of a new mystery] Looks like we're on the case.
- Fred Jones: Let's hit it.
- Daphne Blake: [to the little robot] Hey, Dusty! Watch the shop please?
- Shaggy Rogers: [to Scooby] What do you say, buddy?
- Scooby-Doo: Let's Scooby-Dooby-Doo it!
- Simon Cowell: Every successful group requires hard work and determination. Identifying potential is what I do; and you have got it!
- Simon Cowell: Fred, you're the tank. The muscle.
- Fred Jones: Cool.
- Simon Cowell: Daphne is the people person. The impact.
- Daphne Blake: Awwww.
- Simon Cowell: And Velma has the smarts and technical savvy.
- Velma Dinkley: Thanks!
- Simon Cowell: But you two aren't even listening. You're eating a clownishly oversized sandwich.
- Shaggy Rogers: Like sorry man, you lost me at 'hard work and determination.'
- Scooby-Doo: But you got us back at 'sandwich.'
- Shaggy Rogers: [after returning from the Underworld] Zoinks! I guess friendship really did save the day.
- Scooby-Doo: Rhaggy!
- Shaggy Rogers: Scooby-Doo!
- [they hug each other. The rest of the gang walk up and meet them in a group hug]
- Daphne Blake: I love you guys. You gave us quite a scare, Shaggy.
- Shaggy Rogers: [puts Scooby's collar back on] Well, it takes more than a three-headed monster to keep me away from my best bud.
- Velma Dinkley: [pointing to Fred, Daphne, and herself] Tank, empath, brain. I finally figured out what you guys are. You're the heart of Mystery Inc.
- Scooby-Doo: [reuniting with the gang] You guys are alive!
- Shaggy Rogers: Scooby-Doo!
- [hugs him]
- Daphne Blake: Scooby!
- Fred Jones: Ya-hoo!
- [the rest of the gang comes in for a group hug]
- Daphne Blake: Oh, thank goodness. The gang is finally back together.
- Shaggy Rogers: [to Scooby] Buddy, I never meant to...
- Scooby-Doo: I know. Me neither.