Giganotosarus making his first appearance after the children leave
Giganotosaurus (also called Plated Sharptooth[1]) is the true main antagonist in The Land Before Time V: The Mysterious Island, who only appears in the climax. He is a Giganotosaurus and a ferocious, evil dinosaur. He is voiced by played frank Welker
Giganotosaurus was first seen emerging from some trees on the island. He soon found Littlefoot, Cera, Ducky, Petrie, and Spike hiding in a grove of roses where Chomper had hidden them, whereupon they fled in terror. As he gave chase, they tried to escape him by hiding under a giant rock. However, he simply nudged the rock out of the way and resumed the pursuit. The gang then ran across the log which they had traveled across before, and from the extra movement, the log collapsed into the crevice below. The children started to taunt the Sharptooth, which then responded by easily jumping over the crevice. The chase continued until they reached a cliffside on the edge of the island, where he had the children cornered.
As Giganotosaurus was about to eat them, Chomper came to his friends' aid and bit him on his tail. He attempted to kill Chomper in response, but Chomper dodged, and the Sharptooth bit his own tail instead, causing tears to well up in his eyes as he cried out in pain.
As Giganotosaurus was about to resume his assault on the main characters, Chomper's parents showed up to rescue them and engaged him in a fierce fight. Giganotosaurus proved to be a formidable enemy as he engaged of his opponents separately, slashing at Papa Sharptooth's snout with his finger claws and incapacitating Mama Sharptooth by cutting her leg with his toe claws. Papa Sharptooth then re-engaged him and eventually managed to knock him off the edge of the cliff, sending him plummeting. The children screamed in terror as they saw the Sharptooth about to crash into them, then managed to run out of his way as he fell into the Big Water below. He swept Chomper off with him in the process with his tail, and he fell off too and screamed as the Sharptooth followed. Giganotosaurus was getting ready to grab Chomper in his mouth, but Littlefoot jumped into the water, saving his life, and the two boys resurfaced just as Giganotosaurus got caught in the current and washed away.
He presumably drowned offscreen, or killed by Cretoxyrhina, somewhat similar to the fate of the original sharptooth in the first film.
