The Giant Ghost Goose is the main villain that appeared in Mystery of the Ghosty Goose. It is a giant goose that tried to attack Scooby-Doo, Shaggy, Daphne, Velma, and Fred. They thought the Giant Ghost Goose was the giant bird that ate one little kid already.
The Giant Ghost Goose is a giant brown goose with a black head, white cheeks and a throat, a yellow beak, orange feet, and a tan underbelly.
The Giant Ghost Goose is extremely ferocious, aggressive, omnivorous, bloodthirsty, acquisitive, monstrous, ruthless, hungry, savage, cruel, scary, and violent.