Apparently he is a Cadillac Escalade monster truck that is painted gray, with a darker shade of gray towards his rear. He has two sets of exhaust pipes, one on each side of his doors, as well as a gray bumper, a chrome grille and silver "W" spokes on his tires.
In Cars: Mater-National Championship, Ginormous makes appearances in story mode as an opponent in the races Waypoint Race #1 and Waypoint Race #3. He can also be randomly selected as an opponent in Waypoint Races in arcade mode.
Ginormous appears in all five of the Monster Truck Mayhem Races in Cars: Race-O-Rama, with the exception of the PlayStation 2 version of the game, in which he doesn't appear at all. Like the previous two games, Ginormous remains non-playable and does not have any additional paint jobs.