Scooby-Doo and Shaggy Rogers saw the Phantom Virus riding on the T-Rex towards them. The gang make off through some very large trees which the beast was unable to navigate due to it's bulk. The Phantom Virus threw a spear at them but missed.
The gang escape on Woolly Mammoths and head to a volcano, there they saw a juvenile pterosaur, which was trapped but was fortunately. The Phantom Virus and his T-Rex caught up with them but again was hampered by the steep volcano and its activity.
The Tyrannosaurus was a large theropod dinosaur with a large head, red violet scales, sharp teeth, a long tail, short arms with two fingers on each hand, and stands on two feet.
- It is the only dinosaur/prehistoric antagonist in the film.
- In reality, it is the third boss of the game.