The Kasai Rex is a gigantic therapod cryptid from the Democratic Republic of the Congo. It is said to be a surviving theropod dinosaur, such as Tyrannosaurus rex, though it has also been depicted as a huge monitor lizard as well as a terrestrial crocodile.
In 1932, Swedish plantation owner John Johnson (sometimes spelled Johanson) was traveling with a servant in the Kasai Valley. They encountered a rhinoceros and tried to avoid detection when a large creature rushed from the undergrowth and attacked the rhino. Johnson fainted and the servant ran away. When Johnson recovered, he saw the creature eating the rhino.
"It was reddish in color, with blackish-colored stripes," he said later. "It had a long snout and numerous teeth." He decided that the creature, 13 m (43 ft) long, was aTyrannosaurus, and also said "The legs were thick; it reminded me of a lion, built for speed".
However, no tyrannosaurs were known to live in Africa, but one theropod similar to the size report and lived in Africa is none other than the Carcharodontosaurus saharicus. Carcharodontosaurus was the apex predator of Early Cretaceous Africa, and was also known to compete over food with Spinosaurus aegyptiacus.
Note: I decided to go with a T-Rex design for the Kasai Rex. I based its colors of the the T-Rex in the Jurassic Park novel.
I am aware of the two photographs confirmed being hoaxes. But that’s not to say that the Kasai Rex itself could not still be real.
Now I realize that an aspect of Cryptozoology and Paranormal studies in general, is always making sure to figure out which ones are frauds. But something to consider in the case of the Kasai Rex is that there are still regions in central Africa, specifically the Likouala Swamp, a region which covers an area the size of Florida, that still remain 80% unexplored.
Another important thing to note is that despite the Kasai Rex photos being fake, we still have reports of other dinosaur-like creatures such as Mokele-Mbembe, Emela-Ntouka, and the Mbielu-Mbielu-Mbielu that continue to pour out from these locations. So it’s possible that there could indeed be a real Kasai Rex also among these alleged real dinosaurs.
So until we have adequately searched throughout this land of the unknown, we may never know if the Kasai Rex or any other alleged living dinosaur still roam the earth today.