Returning of the Key Ring!

"Returning of the Key Ring!" is the sixteenth episode of Scooby-Doo and Guess Who? season two, and the forty-second overall. It aired on October 1, 2021 on HBO Max. It was written by Benjamin Townsend, produced by series creator, Chris Bailey, and directed by Sean Bishop.

Mystery Inc. joins actor Sean Astin on a quest in returning a lost key ring to its owner, which leads them to a hardware store with a plant-like monster.

Memorable quotes
Scooby: Wow! I can't believe it's... Mystery Inc.: ...Famous actor, director, and producer Sean Astin! And he saved us a booth!

Garden lady: And I would have gotten away with it, too, if I hadn't left my key at that darn diner, and you meddling kids hadn't found it, along with famous actor, Sean Astin. Hello, Sean.

Characters

 * style="background-color:#d2d2ff"| Old lady
 * style="background-color:#aaffaa"| Grey Griffin
 * style="background-color:#d2d2ff"| Worker
 * style="background-color:#aaffaa"| Jennifer Hale
 * style="background-color:#d2d2ff"| Manager
 * style="background-color:#aaffaa"| Scott Menville
 * style="background-color:#d2d2ff"| Green Man Monster
 * style="background-color:#aaffaa"| Scott Menville
 * style="background-color:#clear"| Daphne Blake
 * style="background-color:#clear"| Grey Griffin
 * 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"| Shaggy Rogers
 * style="background-color:#clear"| Matthew Lillard
 * style="background-color:#clear"| Scooby-Doo
 * style="background-color:#clear"| Frank Welker
 * style="background-color:#d2d2ff"| Sean Astin
 * style="background-color:#aaffaa"| Himself
 * style="background-color:#d2d2ff"| Waitress
 * style="background-color:#aaffaa"| Grey Griffin
 * style="background-color:#d2d2ff"| Garden lady
 * style="background-color:#aaffaa"| Jennifer Hale
 * style="background-color:#d2d2ff"| Bank detective
 * style="background-color:#aaffaa"| Scott Menville
 * style="background-color:#FDB56C" colspan="2"| Mad Matey McWinkle
 * style="background-color:#d2d2ff"| Sean Astin
 * style="background-color:#aaffaa"| Himself
 * style="background-color:#d2d2ff"| Waitress
 * style="background-color:#aaffaa"| Grey Griffin
 * style="background-color:#d2d2ff"| Garden lady
 * style="background-color:#aaffaa"| Jennifer Hale
 * style="background-color:#d2d2ff"| Bank detective
 * style="background-color:#aaffaa"| Scott Menville
 * style="background-color:#FDB56C" colspan="2"| Mad Matey McWinkle
 * style="background-color:#d2d2ff"| Bank detective
 * style="background-color:#aaffaa"| Scott Menville
 * style="background-color:#FDB56C" colspan="2"| Mad Matey McWinkle
 * style="background-color:#FDB56C" colspan="2"| Mad Matey McWinkle
 * style="background-color:#FDB56C" colspan="2"| Mad Matey McWinkle

Organizations

 * Mystery Incorporated

Locations

 * Earth
 * United States
 * More Walls! More Doors! More Stuff!

Objects

 * Key ring
 * Treasure map

Vehicles

 * The Mystery Machine

Filming
It was copyrighted in 2020.

Music
The theme song, entitled "Scooby-Doo, Where Are You?," was written by Chris Bailey, and performed by David Poe. It was produced by Vivek Maddala. The episode's main music was performed by Peter Bateman and Sunna Wehrmeijer.

Release
Dates are in order of release:


 * Turkey: January 6, 2021 on Boomerang
 * Canada: March 7, 2021 on Teletoon
 * Australia: March 13, 2021 on Boomerang
 * United States: October 1, 2021 on HBO Max
 * United Kingdom and Ireland: October 4, 2021

Behind the scenes

 * With every episode's title card, one of the gang announces the guest star, which is Daphne this time.
 * Sean Astin's work as an actor in the Lord of the Rings trilogy is mentioned and there are several allusions: Sean refers to himself and the gang as the Alliance of the Ring of Key, taken from the Fellowship of the Ring.
 * Shaggy says "Zoinks" three times.
 * The episode also ends with a reference to The Goonies, another popular film Sean starred in.

Errors

 * The hardware store's signs say "More! Walls! Doors! Stuff!", while the key ring attachment says "More Walls, Doors & Stuff," but Daphne reads it as "More Walls, More Doors, More Stuff," and the manager and the bank detective also refer to it as Daphne does.
 * The toilet in the hardware store wouldn't be able to flush without water or without being connected to plumbing.

Home availability

 * In the United States:
 * June 28, 2022: Warner Home Video releases Scooby-Doo! and Guess Who?: The Complete Second Season on DVD.
 * In Canada:
 * December 6, 2022: Warner Home Video releases Scooby-Doo! and Guess Who?: The Complete Second Season on DVD.
 * In the United Kingdom and Ireland:
 * March 6, 2023: Warner Home Video releases Scooby-Doo! and Guess Who?: The Complete Second Season on DVD.