Greg Grogan

Greg Grogan is an astronomer.

Scooby-Doo! and You: The Case of the Glowing Alien
He wanted to use High Point Park as a site for an observatory. He also said he believed that UFOs were real, making him a possible suspect to be the Glowing Alien.

Appearances

 * Scooby-Doo! and You: The Case of the Glowing Alien