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* Physical appearance.
* History is incomplete.
Aunt Thelma
Aunt Thelma
Vital Statistics
Species Human
Gender Female
Hair color Brown
Eye color Black
Other Statistics
Occupation Marine biologist
Affiliation Coolsville Marine Institute
Family Velma Dinkley (niece)
Production Details
First appearance APNSD: Scooby Dude

Thelma is a marine biologist at the Coolsville Marine Institute, and Velma Dinkley's aunt.

Physical appearance

Like Velma, she also has brown hair and wears glasses.


Thelma is dedicated to her job. She loves the marine institute's dolphin, Skipper, very much, and is rather concerned for her safety and the other dolphins that were stolen. Like Velma, she also seems to know what might be what.


A Pup Named Scooby-Doo

Season one

She called the Scooby-Doo Detective Agency over to the institute when she realized her dolphins were beginning to disappear. One of them, Skipper, was also taken.