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Lucario is a dual-type Fighting/Steel Pokémon introduced in the fourth generation of Pokémon games, specifically Pokémon Diamond and Pearl. While it is a highly revered and powerful Pokémon within the game's universe, it is not classified as a
legendary Pokémon. Legendary Pokémon are typically characterized by their unique stories, incredible power, and the fact that only a few can be found in each game. Lucario, although quite rare and possessing the ability to sense the feelings of others through waves known as "Aura," does not fit the traditional criteria for a legendary Pokémon. Instead, it is often referred to as a "pseudo-legendary" due to its high stats and the fact that it evolves from Riolu, much like how legendary Pokémon are typically un-evolvable.
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