The pirate skull is a voice-activated code device shaped like a skull.
The skull is off-white, with a dark blue bandana. It is attached to a long skeletal neck.
Scooby-Doo, Where Are You!
- The pirate skull was voiced by Frank Welker.
- The password to the secret entrance is "Yum, yum, yum and a liverwurst a la mode", referring to a sandwich which appeared previously in Scooby Doo and a Mummy, Too, and was seemingly invented by Shaggy and/or Scooby-Doo, which makes it even more strange that it was part of the password.