Alien (The Return of Commander Cool)

The Alien Monster was a disguise of Barbara Simone, a secretary who dressed up like the alien to scare people away from the Colossal Toy Factory so that she could steal Commander Cool toy blueprints.

In Scooby Doo Ghoul School he helps the evil witch hypnotize the children from the school.

Appearances

 * A Pup Named Scooby-Doo - The Return of Commander Cool
 * Scooby Doo Ghoul School