Lucario has been featured in several forms of merchandise, including figurines, plush toys, and the Pokémon Trading Card Game. Lucario can sense and manipulate Aura, a special kind of energy emitted by Ash in the anime, and some special Lucario users who have a special and strong bond with their Lucario creatures.
See also: Pokémon: Lucario and the Mystery of Mew, Mew (Pokémon), Pokémon the Series: XY, Sean Schemmel, List of Pokémon films, and Project M.