In the legendary past, before the creation of Poké Balls, an Aura-guiding Pokémon called Lucario senses two rival armies about to clash near Cameran Palace in the Pokémon universe#Kanto region. He telepathically informs his master, Sir Aaron, through a nearby crystal just before being attacked by three Houndoom. During the battle, Lucario is temporarily Blindness, but is still able to use his Aura Sphere to defeat the Houndoom - sensing their movements with his Aura abilities. The Queen of Cameran, Lady Rin, decides it is right to die with her people, so Aaron leaves on his Pidgeot to meet up with Lucario, but is attacked by a rival group of Skarmory on the way. Aaron tells Lucario that he is leaving and will not be coming back, and when Lucario tries to follow him, he is automatically sealed in Aaron's staff. The Tree of Beginning then shines a bright light covering the land; stopping the war, and the queen realizes that Aaron must have sacrificed himself by using his own Aura to transform the armies' hatred into mutual understanding. Since then, he was hailed as a hero, and only his staff remained for his legacy.