Attack of the Weird Al-Osaurus!

"Attack of the Weird Al-Osaurus!" is the tenth episode of Scooby-Doo and Guess Who? season one. It aired on August 29, 2019 on Boomerang's VSOD service. It was written by Mark Hoffmeier, produced by Chris Bailey, and directed by Gavin Dell.

In his fourth Hanna-Barbera-related appearance, Weird Al meets Mystery Inc. in the middle of losing his accordion camp because of a dinosaur attack.

Memorable quotes
Mystery Inc.: Wow! Famous singer-songwriter, Weird Al Yankovic!

Pete #1: And we would've gotten away with it, too! Pete #2: If it weren't for you meddling kids, aye! Pete #1: And the musical stylings of Weird Al Yankovic.

Characters

 * style="background-color:#d2d2dff"| Michelle
 * style="background-color:#ffff00"| N/A
 * style="background-color:#clear"| Allosaurus
 * style="background-color:#clear"| Frank Welker
 * style="background-color:#clear"| Daphne Blake
 * style="background-color:#clear"| Grey Griffin
 * style="background-color:#clear"| Shaggy Rogers
 * style="background-color:#clear"| Matthew Lillard
 * style="background-color:#clear"| Scooby-Doo
 * style="background-color:#clear"| Frank Welker
 * style="background-color:#clear"| Fred Jones
 * style="background-color:#clear"| Frank Welker
 * style="background-color:#clear"| Velma Dinkley
 * style="background-color:#clear"| Kate Micucci
 * style="background-color:#clear"| Weird Al Yankovic
 * style="background-color:#clear"| Himself
 * style="background-color:#d2d2ff"| Dr. Josephine Tuttle
 * style="background-color:#aaffaa"| Grey Griffin
 * style="background-color:#d2d2ff"| Pete #1
 * style="background-color:#aaffaa"| Kevin Michael Richardson
 * style="background-color:#d2d2ff"| Pete #2
 * style="background-color:#aaffaa"| Frank Welker
 * style="background-color:#d2d2ff"| Big Bob McAllister
 * style="background-color:#aaffaa"| Kevin Michael Richardson
 * style="background-color:#clear"| Ceratosaurus
 * style="background-color:#clear"| Frank Welker
 * style="background-color:#aaffaa"| Grey Griffin
 * style="background-color:#d2d2ff"| Pete #1
 * style="background-color:#aaffaa"| Kevin Michael Richardson
 * style="background-color:#d2d2ff"| Pete #2
 * style="background-color:#aaffaa"| Frank Welker
 * style="background-color:#d2d2ff"| Big Bob McAllister
 * style="background-color:#aaffaa"| Kevin Michael Richardson
 * style="background-color:#clear"| Ceratosaurus
 * style="background-color:#clear"| Frank Welker
 * style="background-color:#aaffaa"| Kevin Michael Richardson
 * style="background-color:#clear"| Ceratosaurus
 * style="background-color:#clear"| Frank Welker
 * style="background-color:#clear"| Frank Welker

Organizations

 * Mystery Incorporated

Locations

 * Rocky Mountains
 * Weird Al's Accordion Camp
 * Campsite
 * Mineshaft
 * The Moon

Objects

 * Sally, the accordion
 * Dinosaur egg

Vehicles

 * The Mystery Machine
 * Big Bob McAllister's car

Music
The music is composed by Steven Morrell. The theme song entitled, "Scooby-Doo, Where Are You?", was written by Chris Bailey, and performed by David Poe.

Release
Dates in order of release:


 * United States: August 29, 2019 on the Boomerang on-demand subscription service
 * United Kingdom & Ireland: October 4, 2019 on Boomerang
 * Canada: October 11, 2019 on Teletoon

Behind the scenes

 * With every episode's title card, one of the gang announces the guest star, which is Shaggy this time.
 * Weird Al previously met Mystery Inc. in the Batman: The Brave and the Bold episode "Bat-Mite Presents: Batman's Strangest Cases".
 * The connection between Weird Al and dinosaurs looks to be a reference to his "Jurassic Park" song, which is a parody of the Universal Pictures film Jurassic Park. Both feature Frank Welker's voice. The same vocal effects can also be heard in another Universal film The Land Before Time.
 * When Shaggy plays southpaw on the accordion, he performs "Flight of the Bumblebee".
 * Weird Al sings the public domain "Hush, Little Baby".
 * How many times does Daphne say "Jeepers"? Twice.
 * How many times does Shaggy say "Zoinks"? Twice.
 * How many times does Velma say "Jinkies"? Once.

Errors

 * The sign says "Al's Accordion Camp", while Weird Al reads it as "Weird Al's All-Accordion Marching Band Camp".
 * In the first night shot, the moon is full, but when Mystery Inc. is riding away from the dinosaur and the gang stop, the moon is crescent. The moon is back to being full when they set the trap.

Everlasting influence
Big Bob McAllister is brought back as a villain in "The Horrible Haunted Hospital of Dr. Phineas Phrag!"