We don't have a biography for Dr. Thistle yet. Hang in there, or go ahead and contribute one.
Appearances
Scooby-Doo!: Mystery Incorporated
Guest cast, played by Grey DeLisle Griffin
- Episode 1x13: When the Cicada Calls (Oct 25, 2010)
- Episode 1x22: Attack of the Headless Horror (Jun 28, 2011)