The Red Rexes are basically identical to the Little Rexes, meaning that they look like a cross between a bulldog and a Tyrannosaurus rex. They have stubby legs, tiny arms, a small horn on their snouts and a rather large head with big jaws in comparison to their bodies. On their backs, they have small spikes where they emit purple smoke. They have neon red-colored skin with cyan body markings.
The Red Rexes and the rest of Dark Gaia's Minions came into being when Dark Gaia broke apart at the beginning of Sonic Unleashed due to its premature awakening by Dr. Eggman. These fragments were then spread across the earth and became Dark Gaia's Minions, with the Red Rexes amongst them. They first appear in Jungle Joyride Night Act I: Starry Night on the Wii/PlayStation 2 version and Windmill Isle Night Act 1 on the Xbox 360/PlayStation 3 version.
While faster and stronger than the Little Rexes, the Red Rexes are still some of the weakest of Dark Gaia's Minions, as their attacks do little damage and they can be defeated relatively easily. However, they have much more health than the Little Rexes, which makes them difficult to take out quickly. The Red Rexes focus on overwhelming the player with sheer numbers, though they are less numerous than their Little Rex relatives. The Red Rexes commonly appear alongside the Little Rexes, but also sometimes appear in groups of their own. Additionally, the Red Rexes can easily be picked up by Sonic the Werehog in the Xbox 360/PlayStation 3 version, making them ideal melee weapons and throwing objects.
The Red Rexes share the Little Rexes' attack patterns, but they are far more aggressive and attack more frequently. When seeing Sonic, the Red Rexes will squeal, jump upwards and run towards him, pursuing the player everywhere on the field and will not stop until they catch up or the player leaves the area. They usually attack their foes straight-on by flinging their jaws open at them in a swift motion.
Upon the reconstruction of Dark Gaia by Dr. Eggman, all of the Red Rexes (along with the other types of Dark Gaia's minions) were returned to the beast, who was later defeated and sealed within the planet's core.
Powers and abilities
The Red Rexes are able to move around by either teleporting into an area in a puff of purple smoke or emerging from black puddles on the ground. As a Dark Gaia minion, the Red Rexes can possess people by latching onto the deepest, darkest part of the heart, and generate despair, negative emotions or even erratic behavior that are completely opposite to the person's personality.
As an empowered version of the Little Rexes, the Red Rexes are faster, stronger and more durable than their weaker counterparts though they are still not very strong. They are surprisingly fast on their feet, capable of crossing several meters in split seconds. They also have strong jaws, giving them a powerful bite, though it hardly damages Sonic the Werehog.