You can possibly get riolu in Pokemon black
Catch a Riolu and evolve Riolu.
in the wild
Safari Zone after unlocking the usage of the blocks.
very very rare
If you have a lucario instead of trying to capture riolu why not breed lucario instead.
You can get him at the safari zone.
in safari zone
I think you mean Riolu. either by trading from another Generation IV game, or in the Meadow area of the Johto Safari Zone.
Yes, there are Sinnoh Pokémon HeartGold and SoulSilver. Kricketot, Buneary, Shinx, Luxio, Budew, Buizel, Floatzel, Chingling, Bronzor, Bronzong, Chatot, Carnivine, Pachirisu, Riolu, Skorupi, Hippopotas, Gible and Croagunk are all available in the wild in both HeartGold and SoulSilver.
Riolu is a Fighting type pokemon.
If your riolu is following you in heartgold or soulsilver you can talk to it.
Ash does not get riolu but it does follow him in Pokemon ranger and the kidnaped riolu and Ash wants to bring him back so he does alitle bit.....