Unlike most Tyrannosaurids, Gorgotyrannus Rubrum (Red Dreadful Tyrant) isn't the apex predator of its ecosystem (Gwangisaurus is the apex predator in this case). Fore reference, I used Scott Hartmann's skeletal diagrams of a Sub-Adult Gorgosaurus and a Juvenile Tyrannosaurus.
Length: 8 meters (26.24 feet)
Weight: 2.5 metric tons (2.46 imperial tons).
The red and grey coloration for a Tyrannosaurid is something that has already appeared elsewhere. They have also appeared in the Jurassic World Fallen Kingdom toy line, some art by James Gurney (author of Dinotopia), Dinosaur Revolution (kind of), Valley of the T. Rex, and there are probably more examples I've never heard of.