Lucario is a bipedal, canine-like Pokémon with a few rabbit-like features as well. It has a medium length tail of the same blue color as well as large, pointed ears with blue insides. Lucario's aura-sensing appendages, called the "paw pads," are black and each has a small, red spike on them. Lucario can understand human speech and has the ability to communicate with humans through telepathy. It is a loyal and noble Pokémon known for its fighting prowess and sense of justice.

Lucario is a Fighting/Steel-type Pokémon introduced in Generation IV. It is known for its ability to sense and manipulate aura, as well as its speed and strength in battle. Lucario is often depicted as a wise and noble Pokémon, with a strong sense of justice and loyalty. In the Pokémon series, Lucario has appeared in various movies, TV episodes, and video games, becoming a fan favorite among trainers and collectors alike.