| Grey (Alien)
The Grey was the disguise of Traveler O'Flaherty.
He looks exactly like a Grey alien.
Scooby-Doo! Mystery Incorporated
The Grey, with the Reptoid and the Nordic Alien, steals a GPS in the Crystal Cove Mall and the Pangea in the Blake Mansion, but is captured by the gang and Sheriff Bronson Stone. (Aliens Among Us)