The Black T. rex (aka Tyrone) is a genetically-engineered Tyrannosaurus Rex that was born into a large island far away from Isla Sorna called Isla Diablo.

He was the first male Tyrannosaurus that became two times larger than Rexy, the queen of Isla Nublar herself, up to 47 feet length as he was the largest and most powerful dinosaur that ever lived.

He escapes from his captivity along with all of the other dinosaurs after an hurricane before Isla Diablo could open. He was known as the king of Isla Diablo.

He even fight against the Indominus Rex to the death without backing down due to his capture in Isla Nublar for nearly three months in Jurassic World and eventually won Rexy as his mate.

https://youtu.be/8XDyfBYE4DY