The Giant is a gluttonous character from "Jack and the Beanstalk."
The Giant and his son were characters made real accidentally by the Ethereal Solidifier. The Giant gorged on food in his castle as his son brought him something. The Giant observed Ecto-2, piloted by Winston Zeddemore and Peter Venkman, then decided he was going to eat Peter and Winston but let his son keep Ecto-2 as a toy. Luckily, the Solidifier's effects were reversed and the Giants soon dematerialized. Ironically, the Giant's mouth was the first thing to vanish.