Riolu appears in several Pokémon games, starting from "Pokémon Diamond and Pearl." It is also featured in various titles, including "Pokémon Sword and Shield," "Pokémon Legends: Arceus," and "Pokémon Go." Riolu is known for its evolution into Lucario when it levels up with high friendship. Additionally, Riolu has made appearances in spin-off games and animated series.
in the game you have to take the personality test if you get it right or your personality is riolu you get to be him
what is that
no unless you start the game over
You have to complete the game, and then recruit it.
A shiny Riolu is like any other shiny Pokemon in the game, for every Pokemon that you encounter, there is a 1 in 8192 chance that it will be shiny.
In Pokemon Diamond and Pearl the only way to get/see Riolu is in an egg. You can get the Riolu egg from Riley in Iron Island. You must have an empty space in your party then go through it with him and defeat a few Galatic Grunts. Then you will receive an egg, when it hatches you will have a Riolu. This is the only way to see/own it in the game. I hope this answers your question!
sassy male onlyhttp://www.serebii.net/dungeonsky/starter.shtml
Riolu and other 4th generation Pokemon don't exist in previous generation Pokemon games this means it can't be obtained in firered or any game before that.
Well, after you beat the WHOLE game, (yes i know that sucks) you can go to Luminous Spring. Go there with a Sun Ribbon and then you can evolve Riolu into Lucario! ^.^
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.
save before the egg is about to hatch then keep turning off your game until you get one