Riolu is a fourth generation baby Pokemon. It will evolve into Lucario when its happiness is maxed and it is leveled up during the day.
In order to evolve Rilou you have to become great friends with it.
Rilou Evolves Into Lucario At Level Thirty With Happyniess PEACE,OUT!!
level it up to 30-50th level. ANd yr rilou is spelled wrongly, it is riolu.
You need to have Rilou happy with the egg the man gives you at Stone Island during the day. Go to pokemon.marriland.com
riolu evolves via friendship
it eloves at a high freindship lavel
you need the sun ribbon
Riolu evolves by happiness during the day.
get a sun ribbon and train for a while
rilou evolves when he likes you alot i suggest that you feed him poffins and keep him at the front of your team and never let him faint i know because that's how myne evolved. and if you do that he might evolve on leval 34 36 38 40or 41
you cant. on iron island team up with riley till you get to the end of the cave then he'll give you a rilou egg.when the egg haches level him up. "friendship evolve". or if you have a exp share you can give it to rilou "make sure rilou is in your pary" get one of you strongest Pokemon and battle Pokemon that it's level are higher than rilou and he will get some points and rilou's level goes up . hope this helped.
You can have an egg with a ditto at the Pokemon daycare center with your riolu and evolve that Pokemon into a Lucario.