|This needs a stretch. (Feel free to remove when satisfied of completion.)|
* History is incomplete.
Professor Greer was a friend of Velma Dinkley.
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
- 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).