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 for a quest in returning a lost key ring to its owner, which leads them to a hardware store with a plant-like monster.

Characters

 * style="background-color:#d2d2ff"| Old lady
 * style="background-color:#aaffaa"| Grey Griffin
 * style="background-color:#d2d2ff"| Worker
 * style="background-color:#aaffaa"| Jennifer Hale (really?)
 * 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:#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:#aaffaa"| Jennifer Hale
 * style="background-color:#d2d2ff"| Bank detective
 * style="background-color:#aaffaa"| Scott Menville
 * style="background-color:#aaffaa"| Scott Menville

Organizations

 * Mystery Incorporated

Locations

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

Objects

 * The key ring

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 score 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 & 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.
 * There are several references to Sean Astin's work on the Lord of the Rings films; Sean refers to himself and the gang as the Alliance of the Ring of Key, taken from the Fellowship of the Ring. The episode also ends with a reference to The Goonies, another popular film Sean starred in.