His royal attire included a headdress based on the horns and frills of a ceratopsian dinosaur. Ogthar was a member of the Demisaurian Brotherhood, a group of Poseidian high officials who sought to cultivate the power of the saurian mind. The approximate extent of the Empire of Poseidos in the reign of Ogthar Prior to the rediscovery of Poseidian artifacts in 1867, it was widely believed by the Dinotopians that Ogthar and Poseidos had never existed at all or were just mere fantasy. Legends told of how he discovered the sunstones and brought metallic beasts to life with them. In the centuries following his death, Ogthar’s dark deeds were forgotten and he was remembered as a legendary demisaurian king of vast wisdon. Ogthar fled into the World Beneath, along with some of his loyal ministers, where he survived for a millennia trying to create new laboratories.

The extensive mining operations beneath Poseidos eventually doomed the capital, which sank beneath the sea in the final days of the Age of Heroes, leading to the collapse of its empire. Though Ogthar secured an alliance with the Chandaran Empire by marrying its ruler, Queen Almestra, relations between the two empires soured since Chandara was home to the largest population of dinosaurs on the island and the Poseidians had agreed that no harm would come to the dinosaurs. The Poseidians invaded the mainland and extended their rule through Dinotopia, displacing humans and dinosaurs alike while threatening all of the old ways of the island. Ogthar’s arrogance and sense of superiority went so far that his regime began to hunt down and slaughter dinosaurs for food, reserved for consumption by the Poseidian elite. Throughout his reign, Ogthar worked to perfect the technology further, creating strutters so advanced that he deemed the dinosaurs to be obsolete and banished them from Poseidos. Ogthar’s reign saw a considerable increase in technological advancement as the Poseidians perfected their sunstone-driven machines. Dinotopia: The World Beneath, Dinotopia: First Flight, Dinotopia: Journey to Chandara Ogthar was the last Emperor or King of Poseidos during the Age of Heroes, 4,000 years ago.

Dinotopia movie 2002