Within the Pokmon Black and White 2 video games, Riolu evolves into Lucario when it ranges up through the day with excessive friendship.
Friendship is a mechanic within the Pokmon video games that measures the bond between a Pokmon and its coach. It may be elevated by battling, utilizing objects, and speaking to the Pokmon. When a Pokmon has excessive friendship, it should obey its coach even whether it is at a low stage, and it will likely be extra doubtless to make use of highly effective strikes in battle.