In Terror of Mechagodzilla, a mad scientist named Shinzo Mafune becomes so obsessed with studying the brain patterns of marine life that he loses his academic credentials and is cast out from the scientific community. Quickly descending into madness, Mafune is able to gain control of Titanosaurus and joins forces with the Black Hole Aliens; the monster is used as the guardian of the destroyed Mechagodzilla's remains; an attack by Titanosaurus on a submarine sent to investigate the remains opens up the film. Dr. Mafune aids in the rebuilding and reconstruction of Mechagodzilla 2, and with both monsters under control, begins his revenge on humanity. After a lengthy battle across the Kantō region, Mechagodzilla 2 is destroyed by Godzilla, who then hits Titanosaurus with a blast of his atomic ray. Having already been left disoriented by the efforts of the humans, a dazed Titanosaurus then falls off a cliff into the ocean. Whether or not he survived is unknown. Titanosaurus has not appeared in any films since, although he briefly appeared as stock footage in the opening credits of the 2004 Millennium film as one of many monsters that arose from the devastation brought by the World Wars, along with Varan, Gezora, Baragon, Gaira, and Megaguirus. Titanosaurus is 60 meters tall and weighs 30,000 metric tons.
Design
Titanosaurus shares its name with a real dinosaur taxa, though they do not share much beyond nomenclature; Titanosaurus' design is more reminiscent of spinosaurs, such as Spinosaurus or Suchomimus, as it shares the same aquatic adaptations, crocodile-like snout and sports a sail-like fin emerging from the dorsal side of his back, like the humps or spines of a spinosaur except for a fish-like tail. Originally, Titanosaurus was going to be two separate monsters called the Titans that would eventually merge into the final design, but due to budgetary restraints only the final form of the Titanosaurus suit was made. The roars of Titanosaurus are a combination of modified elephant trumpets and horse snorts.
Abilities
As well as using teeth and claws to fight, Titanosaurus can, by employing his tail as a fan, generate winds strong enough to demolish buildings and hurl debris at great velocities. When used in the water, it creates whirlpools powerful enough to completely immobilize submarines, in addition to its use as a high-powered propeller and rudder. Titanosaurus is quite hardy as well as a determined combatant, standing toe-to-toe and exchanging blows with Godzilla on a number of occasions, and in addition landing kicks and punches that propel his opponent great distances, but even though Godzilla's atomic ray and extensive combat experience ultimately give him an edge when facing Titanosaurus one-on-one, as Titanosaurus seems to lack a ranged weapon in the film, Mechagodzilla 2's timely interventions allow his ally to retain or regain the initiative as necessary. Leading up to their first fight, the alien leader predicts Godzilla would be badly hurt with Titanosaurus dead which would end perfectly for them to finish off Godzilla and Tokyo with Mechagodzilla. Mafune however said to his daughter Mechagodzilla is no match for Titanosaurus as he just a machine, not alive, ultimately he would regret his genius as the aliens take his approach by putting Mechagodzilla's controls in Katsura's stomach. In , Titanosaurus has a sonic beam as his ranged weapon; though ironic, the explanation given is that Titanosaurus' own sonar waves were disrupted by the humans' sonic device; as many undersea creatures evolve some kind of sonar or enormous eyes to see in the lowest parts of the ocean.
