| Sir Aaron|
|Hair color||Dark Blue|
|Trainer class||Aura Guardian|
|Anime debut||Lucario and the Mystery of Mew|
|English voice actor||Jason Griffith|
|Japanese voice actor||Kōichi Yamadera|
Sir Aaron was a knight of Cameran Palace. He was also an Aura Guardian, able to manipulate a type of energy known as Aura, which is why he is called the True Guardian of Aura. He taught Lucario, his student, how to use this energy as well. Because of this, the two became close friends. Lucario, however, still saw their relationship as one of master and servant.
Aaron left the castle to stop a war between two unknown armies before they destroyed his kingdom. He found Lucario, whom he told that he was never going back to the castle. Lucario instantly jumped to the wrong conclusion: Aaron had left the kingdom for dead, and Aaron then sealed Lucario in his staff.
Before he died to stop the war, he sent a message to Lucario using a time flower, saying he was his friend and that he did not want Lucario to share the same fate he suffered. Aaron said, "Aura is with me," and restored Mew's power by sacrificing himself. Lucario did not know what had happened, and thought Aaron was abandoning the castle instead of saving it.
Ash Ketchum has the same Aura as Sir Aaron. Because of this, Lucario first mistook Ash for Aaron. Ash is also able to use the same powers as Aaron when he wears the special gloves that Aaron wore. Coincidentally, Ash dressed up exactly as Aaron did in the tournament.
After Lucario died, they were able to reunite with each other in the after-life, where it was shown that Sir Aaron had developed a taste for chocolate, something that Lucario found very amusing.
The following is a list of Sir Aaron's known Pokémon:
| Pidgeot was Sir Aaron's prime method of transportation in the film. As Sir Aaron was riding on it, it was able to evade the attacks of other Flying-type Pokémon.
None of Pidgeot's moves are known.
|Debut||Lucario and the Mystery of Mew|
Over 1,000 years ago, before the invention of Poké Balls, Lucario served Sir Aaron, who in turn served Queen Rin, the queen of Cameran Palace. Lucario and Aaron were sensitive to Aura, invisible vibrations that all objects, especially living things, release. This enabled them to "see" objects and living creatures and predict the actions of others even with their eyes closed. Lucario could use Aura as an offensive attack in the form of Aura Sphere, in which he would amass a sphere of energy and hurl it at an opponent. Aaron taught Lucario how to refine his sensitivity to Aura.
|Debut||Lucario and the Mystery of Mew|
|Ken Sugimori's prototype design of Sir Aaron||Final artwork for the movie|
In the TCG
This listing is of cards mentioning or featuring Sir Aaron or his Pokémon in the Pokémon Trading Card Game.
| Sir Aaron's Pokémon|
Cards listed with a blue background are only legal to use in the current Expanded format.
Cards listed with a silver background are legal to use in both the current Standard and Expanded formats.
|Aaron's Pidgeot||Movie Commemoration VS Pack: Aura's Lucario||006/020|
|Aaron's Aura||T [Su]||Movie Commemoration VS Pack: Aura's Lucario||019/020|
- Riley, a character in Pokémon Diamond, Pearl, and Platinum who also owns a Lucario, bears similarities to Sir Aaron in both looks and the capability of using Aura. After the player escorts him to the end of the cave on Iron Island, he will give them an Egg that contains Lucario's pre-evolved form, Riolu. One of the characters seems based on the other, but it is possible Riley was scripted into Diamond and Pearl before the creation of Sir Aaron, considering Nintendo's policy on leaking games.
- He shares his voice actors in both English and Japanese with Marcus.
|Japanese||アーロン Arlon||Possibly named after the prophet Aaron.|
|English||Sir Aaron||Similar to his Japanese name.|
|Korean||아론 Aron||Transliteration of his Japanese name.|
|Chinese (Mandarin)||亞朗 Yǎlǎng||Transliteration of his Japanese name.|
|This movie article is part of Project Anime, a Bulbapedia project that covers all aspects of the Pokémon anime.|