Lucario And Mewtwo are your partner Pokémon. While it took Mewtwo some time to get used to you, Lucario didn't mind you from at all. They are polar opposites of each other but they never get hostile towards one another. Lucario is more of the gentle and empathetic type and Mewtwo is more about being a brute and a force to be reckoned with but despite his tough personality, he is not harsh towards you being his partner.