The Oxalaia rex quimtimus is a bizzare hybrid between a Tyrannosaurus rex ultimus and an Oxalaia quilombensis hadeni. The creature is overwhelmingly large; it is 133ft tall with it's sail, 287ft long, and 103 tons; a terrestrial animal that is nothing short of impossible in reality.
AppearenceThe Oxalaia rex is, as the name implies, an unnatural hybrid between a Tyrannosaurus and an Oxalaia. The creature itself can be most any color that either of it's parent was pigmented; ranging from the exotic blue with a rainbow sail common in Oxalaia, to the dull green or browns of a T. rex, with the dull sail of an adolescent Oxalaia.
O. rex quimtimus uses it's 215 ton bite force to destroy nearly anything that passes it's path. If it's 2 foot teeth don't get you, then it's colossal arms will. The creature is armed with 24 foot long hand claws, attached to 62 foot long arms; the largest defenses of any animal, biological or engineered. Being such a colossal creature, it should not be of surprise that it's size in of itsellf is a defense. It requires very little armor to keep itself alive, letting it's sheer mass protect it from small "predators".
Oxalaia rex is, in it's own right, practically indestructable. But even this giant "monster" is not without flaws. It's bulk, though it protects it from most hazards, is a severe handicap on it's speed, only allowing the colossus to go a measly 12 mph. It's massive size also makes way for a different issue; one fall, and it will likely be unable to raise itself up ever again, leaving the massive beast for dead.
It is entirely unknown how the Oxalaia rex came into existence. It only appeared in Jurassic Park VI, Jurassic Park VII, and Jurassic Park X, with it's first appearence explaining almost nothing about how it came to be. It can be assumed that Jurassic Park VIII: Power will give insight on how Oxalaia rex came to be.
Like many of PYTHNUT's starring creatures, O. rex has been met with very negative reception from readers and fanfiction critics alike, once cited as an "overpowered predator", alongside Oxalaia quilombensis hadeni and Tyrannosaurus rex ultimus.