Expansion This needs a stretch. (Feel free to remove when satisfied of completion.)
* Physical appearance.
* Personality.
* History is incomplete.
Vital Statistics
Species Mantis
Gender Male
Eye color Red (yellow sclera)
Other Statistics
Identity Professor Greer
Reason To keep people away from the gardens that had struck oil
Production Details
First appearance TSDS: The Creepy Creature of Vulture's Claw

The Mantis was the disguise of Professor Greer.

Physical appearance

The Mantis was an insectiod type of creature who was apparently 7 feet tall according to Shaggy Rogers.


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Powers and abilities

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The Scooby-Doo Show

Season three

Professor Greer unmasked

Professor Greer unmasked.

The Mantis came out of the ferns and chased the mailman. When Scooby-Doo gave the flowers to the Mantis, it sneezed. Professor Greer told the gang about the Praying Mantis.

The Mantis continued to chase the gang, even taking Daphne Blake hostage. When it was finally trapped, the three suspects ended up appearing. The Mantis was revealed to be Professor Greer.



  • Professor Greer must have been allergic to flowers because he was the Mantis when he sneezed from the flowers.
  • The Mantis also appeared, not as a monster, but as one of the costumes in the Coolsonian Criminology Museum in Scooby-Doo 2: Monsters Unleashed.
  • At the beginning, the Mantis appeared to be almost as tall as a truck when facing the mailman, but strangley, it was a smaller size when it attacked Mystery Inc..
  • The Mantis's growls and hisses were reused from the Gator Ghoul.