Expansion This needs a stretch. (Feel free to remove when satisfied of completion.)
* Personality.
* History is incomplete.

Professor Greer was a friend of Velma Dinkley.

Physical appearance

Greer is an elderly Caucasian male with gray hair and wears glasses. He wore a blue suit, a light blue shirt, a brown bowtie and black shoes.


As his normal self, he is friendly and intelligent; but as the mantis he is very unwelcoming and slightly evil.


The Scooby-Doo Show

Season three

Professor Greer unmasked

Professor Greer unmasked.

He secretly dressed up as the praying mantis creature as he wished to scare competition away until his purchase of the gardens was finalized; because he had discovered oil on the property.



  • He is probably allergic to flowers as he sneezed from them when he was wearing his Mantis costume.
  • He must be very fast, as he appeared as the Mantis in the hallway seconds after exiting in his normal attire.
  • His height changes throughout the episode (from about 5 feet to about 7 feet).
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