Mantis

The Giant Mantis was the disguise of Professor Greer.

Physical Appearance
The Giant Mantis was a insectiod type of creature who was apparently 7 feet tall according to Shaggy Rogers.

Season Three
The Giant Mantis was first seen coming out of the ferns and chased the mailman. When Scooby-Doo gave the flowers to the Giant Mantis, it sneezed. Professor Greer told the gang about the Praying Mantis.

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

Appearances

 * The Scooby-Doo Show - The Creepy Creature of Vulture's Claw

Trivia

 * Professor Greer must have been allergic to flowers because he was the Giant Mantis and he sneezed from the flowers.
 * The gang called the Praying Mantis Creature the Mantis instead of the Giant Mantis.
 * The Giant Mantis's roars sound like Gator Ghoul's who was seen in The Gruesome Game Of The Gator Ghoul.


 * The Giant Mantis Creature 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 begininng, the Giant Mantis appeared to be almost tall as a truck than the mailman, but strangley, the Giant Mantis was in a different size when he attacks Mystery Incorporated.