You haven't made it far then. You can catch old pokemon. Yes, you can catch Riolu in the challenger's cave after you beat the elite 4. He's rare though.
Riolu is 4 generation Pokemon. You can get egg only in Pokemon Diamond and Pearl
riolu evolves when he is really happy
No, friendship will not be affected.
riolu
very very rare
You haven't made it far then. You can catch old pokemon. Yes, you can catch Riolu in the challenger's cave after you beat the elite 4. He's rare though.
You can possibly get riolu in Pokemon black
You can get a Riolu in the Safari Zone-even though they are very rare. From there, evolve it into Lucario.
Riolu is a Fighting type pokemon.
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.....
You can get riolu by releasing 5 lucario's at the release point you will get a riolu ticket use it at the recruit point to get riolu.
Riolu is 4 generation Pokemon. You can get egg only in Pokemon Diamond and Pearl
The Pokemon before riolu is Unown.
Catch a Riolu and evolve Riolu.
riolu evolves when he is really happy
It is quite rare to have an egg hatch and for a trainer to not only find a female Riolu, but to have it shiny as well. The gender ratio of Riolu is 87.5% male with 12.5% of the species being female. In Pokemon Diamond and Pearl, the chance of encountering a shiny Pokemon (in the wild or through hatching) is 1 in 8192 or approximately 0.012207%. By elementary calculations (not to be relied on very much), it seems that the chance of hatching a shiny female Riolu is 0.001525875% or 1.53 x 10^-3, which is indeed incredibly rare.