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|This needs a stretch.|
Professor Greer was a friend of Velma Dinkley.
Greer is an elderly Caucasian male with gray hair, and wears glasses.
As his normal self, he is friendly and intelligent; but as the mantis he is very unwelcoming and slightly evil.
The Scooby-Doo Show
- He is probably allergic to flowers as he sneezed from them when he was the Mantis.
- 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).