The Kasai Rex is a gigantic theropod cryptid from the Kasai Valley of the Democratic Republic of the Congo in Africa. It is said to be a surviving species of theropod dinosaur, such as a Tyrannosaurus rex or Giganotosaurus, as the cryptid's namesake, although quite a low possibility; if it is indeed a living African theropod it's likely a species of spinosaurid, abelisaurid, allosaurid, or a carcharodontosaurid; as there have been no known species of tyrannosaurid ever recorded and depicted in Africa. It has also been depicted as a species of gigantic monitor lizard as well as a species of bipedal terrestrial crocodile, which are both much more logical speculations. The cryptid is long thought to be a theropod, in case it is real. As the name implies a heavy connection with tyrannosaurs. However, no known tyrannosaur as well as any tyrannosaurid species ever lived in Africa, but a theropod similar, potentially larger, in the size and overall shape, was reported and lived in Africa, it is none other than the Carcharodontosaurus saharicus. The Carcharodontosaurus was one of the apex predators of Early Cretaceous Africa, and was also known to compete for food and territory with Spinosaurus aegyptiacus, Baharisaurus ingens and Deltadromeus. Spinosaurus Aegyptiacus was an another apex predator that grew 41 to 55 foot long, a carnivore from Northern Africa, from Egypt to Morocco. It ate a wide variety of prey such as the aquatic animals from its habitat like large Crocodylmorphs, multiton fish Lepidotes and Onchopristis; and terrestrial animals like Iguanadontids, such as Ouranosaurus, as well as subadult and juvenile sauropods. No full or nearly complete skeleton has been discovered. There's a possibility that it was likely the largest theropod known. In addition; Spinosauridae; either Spinosaurus, Sigilmassasaurus or another species of large spinosaurid; are also suspected to represent sightings of the Nguma-monene and the Niger firespitter. Carcharodontosaurus Saharicus was a 30 to 45 foot long carnivore from northern Africa as well as some parts of South Africa. Both creatures lived in swampy places around 70 million years ago. They would have eaten Paralititan, Ouranosaurus, Aegyptosaurus, and if needed the scavenging abelisaur Rugops. It has also been suggested that it could be a large monitor lizard or crocodylomorph.
