Mayhem of the Moving Mollusk

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Mayhem of the Moving Mollusk
Mayhem of the Moving Mollusk
A Pup Named Scooby-Doo
Air date July 6, 1991
Written by David Schwartz
Bill Matheny
Previous episode

Horror of the Haunted Hairpiece

Next episode

The Were-Doo of Doo Manor

Mayhem of the Moving Mollusk is the fourth episode of the third season of A Pup Named Scooby-Doo, and the twenty-fifth episode overall in the series.


When the high-tech monster catching group "Critter Getters" breaks up, the remaining member wants the gang to restore her reputation for her, by helping catch the Moving Mollusk, a snail monster terrorizing New York City.


Insert details here.

Cast and characters

Actor Character
Don Messick Scooby-Doo
Casey Kasem Shaggy Rogers
Christina Lange Velma Dinkley
Kellie Martin Daphne Blake
Carl Steven Freddie Jones
Scott Menville Red Herring
Actor Lester Leonard
Actor Moving Mollusk
Actor Julie
Actor Ivan Orton
Barry Gordon Englebert Newton
Actor Secretary


Song Credits Performed by
"Monster Mollusk" Credits Performed by


  • Moving Mollusk/Lester Leonard


Suspect Motive/reason
Ivan Orton Angry over money he was owed.
Englebert Newton Angry he didn't get to be in Critter Getters.
Lester Leonard To make Ghoul Gone more famous.
Red Herring As always.


Culprit Motive/reason
Lester Leonard as the Moving Mollusk To make Ghoul Gone more famous.



Animation mistakes and/or technical glitches

  • After the Moving Mollusk is launched off the turnstile on to the train and it leaves, the second track, the other subway platform, and the city backdrop are all missing.
  • When Lester Leonard is shown appearing to catch the Mollusk, Scooby and the gang are positioned inconsistently from the background. They are undersized and appear to be floating above the ground.

Inconsistencies/continuity errors and/or goofs/oddities

  • None known.

Home media


Shaggy: (narration) Like, it was a quite day in the clubhouse, and I was making a pizza with my pal, a pup named Scooby-Doo.

Shaggy: Like, you know, there are some kinds of critters I don't mind sharing with my pal, a pup named...
Scooby: ...Scooby-Dooby-Doo! (quickly munches on his pizza slice)

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