Besides that, he was also the highest rank you could get in Pokemon Mystery Dungeon, and one of the first 4th gen pokemon revealed. He is also one of the costumes you can unlock in Battle Revolution(of which all the costumes are of popular pokemon). The monster itself is unique despite what others say, not just from his appearance that takes from mythic and Egyptian overtones, but also the fact that it's among the few pokemon that have moves that can almost be considered 'signature moves'. Pikachu has thunder/shock/bolt, Jigglypuff has Sing, Mewtwo has Psychic/Shadow Ball, Squirtle has Withdraw/WaterGun, Ivysaur has Vinewhip, Charizard has Flamethrower, and Lucario has Aura Sphere, a move that feels very 'Lucario-y', there are many pokemon that simply don't have moves that personafy into their character as much. Moves that seemed to be made for that Pokemon. Lucario is the 'Aura Pokemon' after all, a Pokemon that can see the aura of all living things, predict an opponent's thoughts and actions through their aura, and can actually understand human speech and dialogue instead of just commands(these are all Pokedex info, not anime info).