The Sludge Monster from the Earth's Core (episode)

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This page is about the episode. For the monster, see Sludge Monster from the Earth's Core.
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The Sludge Monster from the Earth's Core (episode)
[[File:File:Sludge Monster title screen.png|290px]]
A Pup Named Scooby-Doo
US Air date September 17, 1988
Story by Tom Ruegger
Teleplay by Mary Jo Ludin
Directed by Oscar Dufau
Art Davis
Paul Sommers
Bob Goe
Don Lusk
Previous episode

A Bicycle Built For Boo!

Next episode

Wanted Cheddar Alive

The Sludge Monster From The Earth's Core is the second episode of the first season of A Pup Named Scooby-Doo.



The Coolsville bank is robbed and the bank's janitor reports that he saw a monster in the vault that was responsible for the theft. However, nobody believes him except for the Scooby-Doo Detective Agency who then proceed try to find the monster and solve the mystery. The monster is later seen wondering around Scooby's giant doghouse.


Insert details here.

Cast and characters

Actor Character
Don Messick Scooby-Doo
TV announcer
Casey Kasem Shaggy Rogers
Mr. Rogers
Christina Lange Velma Dinkley
Kellie Martin Daphne Blake
Carl Steven Freddie Jones
Scott Menville Red Herring
Bernard Erhard Mr. Buckston/
Sludge Monster from the Earth's Core
Chief-type police officer
Actor Mr. Williams


Song Credits Performed by
"He's Got His Eye on You" Credits Peformed by


  • Sludge Monster from the Earth's Core/Mr. Buckston


Suspect Motive/reason
Mr. Williams As the janitor he had the best possibility to rob the bank because he has the keys.
Red Herring As always.


Culprit Motive/reason
Mr. Buckston as the Sludge Monster from the Earth's Core To rob the bank.



  • This is the first appearance of Mr. Rogers in A Pup Named Scooby-Doo.
  • This is the first of several episodes to have the gang solve mysteries at night while in their sleepwear.
  • Shaggy's real first name is revealed to be "Norville" which Scooby teases him about.

Animation mistakes and/or technical glitches

  • None known.

Inconsistencies/continuity errors and/or goofs/oddities

In other languages

Language Name Meaning
Greek Το Λασπο-τέρας από το Κέντρο της Γης The Sludge Monster from the Earth's Core

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