Riyu's History
Riyu is a Mountain Dragon that is a companion of the ninja. Distinguished from his herd, Riyu stands out as a remarkable dragon due to his dragon power. Consequently, Riyu possesses a multitude of extraordinary powers akin to those exhibited by other special dragons. His power gained the attention of Ras, who has the Claws of Imperium capture him before Riyu attempts to escape, only be recaptured along with Arin, a Spinjitzu prodigy, and Sora, whom he boosted her the power of Technology, until all three were rescued by Lloyd Garmadon. After insuring his herd's safety, Riyu decided to stay with the Ninja as they start to regroup, during which they head to Imperium to disable Sora's old prototype, but Riyu ends up captured by Imperian citizen Percival Tartigrade, who turns the former into Beatrix, but was rescued by Arin and Sora. Upon learning the Dragon Cores can stabilize the Merged Realms, Riyu accompanies Nya and Sora to the Pinnacle of Crystals, where they discover the Yellow Dragon Core was moved to the Land of Lost Things, only to lose it to Dr. LaRow. Returning to Imperium, Riyu joined the Resistance, led by Percival to expose Beatrix, who uses a weapon to create MergeQuakes, sending Riyu into one, until Lloyd used the cores to stabilize the world, and Sora had achieved her True Potential.
A year later, Riyu attended the Mech Master 5000, which had been interrupted by the Mechanic, later helping stop Lava-Tides from using Ice Dragon eggs for their noodles.
Sometime later, Riyu eventually matured into a teenager, but still lacked the ability to fly. After getting bested in a fight against Cinder alongside the other ninja, he and the others trained under the guidance of the Dragon Masters Egalt and Rontu to try to learn the Rising Dragon technique. Riyu was taught the basic movements of Spinjitzu by the latter dragon, and ultimately was able to fly to save Arin from falling from the Destiny's Bounty. Riyu helped the ninja stop the Ritual of the Blood Moon.
While assisting Arin in uncovering information about his parents' whereabouts, Riyu discovered that his matriarch was killed for her Crown of Horns. To track down the culprits, Riyu joined the ninja in the City of Temples, where they vied against the Wolf Clan to prevent Ras from acquiring Elemental Powers to capture the Source Dragons. During the Tournament of the Sources, Riyu established communication with Kai, who possessed Riyu's dragon scales while trapped in the Nether-Space alongside Bonzle. With Nya's help, Riyu successfully liberated Kai and Bonzle from the Nether-Space; however, the Forbidden Five, the matriarch's assassins, escaped and Arin was separated from the ninja.
