Rali is a character in Volcanion and the Mechanical Marvel.
As a boy, Rali always adored Nikola and many times he would spend the entire day in his room reading texts and performing experiments. As a result, Raleigh became close to Alva, an Azoth Kingdom councillor and arcane science researcher. Due to this, Raleigh trusts completely in Alva and believes obtaining Magearna is for the good of the kingdom.
He is first seen in the movie meeting Magearna and introducing himself as the prince of Azoth kingdom. Later, when Alva successfully captures Magearna, Raleigh expresses his excitement that their plans can succeed, only to be betrayed by Alva and has Gengar use Mean Look on Magearna. He opens the hatch on Magearna's chest, revealing its Soul-Heart, which he tries to remove. Raleigh tries to stop him, but Levi holds him and forces him to watch as Alva removes the Soul-Heart. Alva tells the horrified prince that he will now be able to seize control of the Azoth Kingdom before having Gengar put Raleigh to sleep using Hypnosis.
After Alva is defeated, Rali wakes up and rejoins his sister. At the end of the movie, with Ash's advice, Rali and Slurpuff decide to leave the castle to begin his own Pokémon journey.