No, your eyes do not deceive you, that is a bipedal T. rex. Created from the DNA found in a fossilized egg, he has the intelligence of a human, but the ravenous nature of a predator. He originally began racing to prove his superiority to humans. However, he is controlled by his instincts, often threatening to eat his fellow racers. He drives the Big Fang, focusing on control to counteract Bio Rex’s fierce reflexes.