1. Happy Birthday, Scooby-Doo Part 1
Aired: Sep 8, 1984Scooby-Doo's birthday is being celebrated with a surprise party, but things t...
The gang stumbles upon two ingenious twin inventors while trying to order a pizza, and they're working on a groundbreaking project that has the potential to revolutionize humanity.
Current Status: Ended
Network: ABC
Production Country: United States
Currently you are able to watch "The New Scooby-Doo Mysteries" streaming on HBO (Via Hulu) or for free with ads on Tubi TV.