Once you get the iron island egg in Pokemon diamond/pearl, you can go anywhere you want to in order to get the egg to hatch. But in the walkthrough it tells you to battle Byron (if you already haven't), and then your rival will come to you and say that professor Rowan wants to see you at the Canalave library. The story will progress regularly if you do as everyone hints you to do.
Riley gives you a Riolu egg after you completed defeating team galactic in Iron island.It'll only be level 1 though, so if you want to use it for the main storyline you'll have to train a lot.
it is on iron island you get it in an egg you can get to iron island by a boat in canalave city
When you go to iron island(other side of Canalave city)after battling your rival or getting the canalave city badge sail to iron island with the sailor there.at the entrance there will be a dude he will give you strength and when you finish all the levels a riolu egg
When you beat the 6th gym go down and there is a boat, talk to the sailor and he'll ask you if you want a ride to iron island you dont need to beat the gym tho
After the 5th Gym, you can go to Iron Island. Whilst one Iron Island, you will have a double battle with Riley. After you win the double battle, he will give you a Riolu Egg. REMEMBER, before you go and do the double battle, make sure you have one empty space in your battle team so that you can actually obtain the Riolu egg. By the way, it takes 6803 steps to actually hatch the Riolu egg.
you can breed a lucario with a ditto or go to iron island and get a egg from riley
riley is at the iron island if you go with him at the end he will give you a egg
you get it from Riley from iron island ,from Jesse and Ryan Termaat
Riley gives you a Riolu egg after you completed defeating team galactic in Iron island.It'll only be level 1 though, so if you want to use it for the main storyline you'll have to train a lot.
you can get a riolu egg in iron island. you sail there from canalave city. you go through iron island and find a guy named Riley. if you have a open space in your party he should give you a riolu egg. hope this helps
it is on iron island you get it in an egg you can get to iron island by a boat in canalave city
Lucario can be in diamond first you need to go to iron island and meet rily guide him to the island and he will give you an egg
You get a Riolu egg after helping Riley at Iron Island
go through iron island with a person named riley and he will give you an egg after you help him get out from the exit (not the entrance).
go to iron island and complete it and rile gives u a riolu egg
go to iron island and go to the next to last section of the cave riley will give you a riolu egg
You must go to Iron Island. Then go through it. At the end riley will give you a riolu egg.