History
Lucario debuted in Steeling Peace of Mind! on Iron Island. When Ash and his friends traveled there after being contacted by Barry, they found the local Steel-type Pokémon fighting brutally against each other. When a crazed Aggron attacked Ash, Riley stepped in and had Lucario attack it with Close Combat. Despite being a Steel-type as well, Lucario wasn't affected like the others of its type due to its strong aura.
With Lucario’s aura, they found the source of the problem: A machine operated under Mars's command that was using the Spear Key to create low frequency waves which tortured the Steel Pokémon. Lucario attempted to read the Aura coming out of the machine, but at that time, Mars placed the Spear Key into a pillar at the Iron Ruins. The pulses of energy beam overwhelmed Lucario and caused it to rebel against Riley, even breaking its Poké Ball in half when he tried to recall it.
Even then, however, Lucario wasn't completely under the machine's influence and tried to destroy the machine but couldn't do it. Ash managed to finish the job and destroy the machine, so Lucario and the other Steel types were brought back to their senses. When Mars realized her plan was shot, she fled and attempted to blow up Iron Island with explosives, but her efforts were thwarted when both Riley and Lucario used their auras to contain the blast and send it flying.
Following the arrival of Professor Carolina, Riley and Lucario decided to remain on Iron Island to investigate the Iron Ruins further.
Personality and characteristics
Lucario possesses a great deal of strength and is selfless in its approach, much like its Trainer. While it has a stoic manner, its good intentions are clear. Lucario works completely in sync with Riley, making them a formidable duo of Aura Guardians. It relies on its aura abilities which provide Riley with incredible insight, as seen through their Team Galactic counter-operation.
Moves used
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| Using Close Combat
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| A † shows that the move was used recently, unless all moves fit this case or there are fewer than five known moves.
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Pokémon Adventures
Lucario in Pokémon Adventures
Lucario using the four moves in succession
Lucario first appears in Grumpy Gliscor along with his Trainer Riley on Iron Island waiting for Diamond to arrive so that they can train him and improve his battling skills. After he arrives, they begin their training. Lucario is pitted against Tru, Don, and Lax, and with strong moves like Close Combat and Aura Sphere, he puts them into a tight spot before catching Tru's Wood Hammer and holding him while his Aura Spheres fall from the sky and defeat Diamond's Pokémon. Lucario then oversaw Diamond's training along with Riley, but during their training, he senses something with his Aura that turns out to be two Cue Balls who have stolen a Pokémon Egg. The Cue Balls blind Riley and Lucario with Vespiquen honey and prevent them from using their Aura with a Mothim's Air Slash, they are defeated by Dia's newest technique: the "Mach-one-and-only-Razor-Leaf" and are left to suffer the wrath of Lucario who beats them with Close Combat, Aura Sphere, Bone Rush, and Flash Cannon in quick succession.
Moves used
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| Using Aura Sphere
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| An × shows that the move cannot be legitimately known by this Pokémon in the games.
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| A † shows that the move was used recently, unless all moves fit this case or there are fewer than five known moves.
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Pokémon Diamond and Pearl Adventure!
Lucario in Diamond and Pearl Adventure!
Lucario first appears in Serious Training on Iron Island!! as it rescues Hareta from an attack caused by B-2's Graveler. Later, it takes on B-2's Drapion where it tried to use Aura Sphere, but fails due to Drapion's 360 rotation effect. Lucario was able to take out Drapion with the teamwork of Hareta's Riolu given from Riley when it was an Egg.
Moves used
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| Using Aura Sphere
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| A † shows that the move was used recently, unless all moves fit this case or there are fewer than five known moves.
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