Titanosaurus is a giant monster or daikaiju whose form is similar to that of a dinosaur, though the exact species that he takes his appearance from is unclear. Played by "suitmation" actor Katsumi Nimiamoto, he appeared in the 1975 film, Terror of Mechagodzilla.
Titanosaurus, or Chitanozaursu, is a mutated dinosaur that lived beneath the sea in the Pacific Ocean not far from the Japanese archipelago. It was awakened by the evil scientist Shinzô Mafune, who took control of the creature and used it as the instrument of destruction in a personal vendetta against the world. Also taking control of the robot known as Mekagojira 2, Mafune sent the two titans out to wreak havoc in Yokosuka.
Titanosaurus fought up against Godzilla, and proved to be a viable threat to the King of the Monsters. With a distinct height advantage, Titanosaurus was adept at using his neck as a battering weapon, similar to the way giraffes fight one another. He also demonstrated incredible upper body strength as well as a superhuman pressure in his jaws and could lift Godzilla's entire body and hold him suspended in the air with just his mouth. He could even throw him.