The Unidentified big-headed hybrid theropod is a hybrid dinosaur from the short film LEGO Jurassic World: The Indominus Escape.
It is only known that the hybrid contains Tyrannosaurus rex DNA, but it is unknown what other species make up the rest of its genome. It does possess toe-claws, so it's possible that it might contain Velociraptor DNA.
During Owen Grady and Claire Dearing's visit to the Hammond Creation Lab, Owen notices the hybrid theropod struggling to move with its small body and large head, which leads to Henry Wu stating that he might have put too much Tyrannosaurus rex DNA into the hybrid. It attempts to drink from a water bowl, but due to its large head, tips the water bowl, causing it to attempt to drink while the water is pouring out.