You can't get to it on Diamond Version. Only on Platinum Version. It isn't on Diamond Version. Plus, you have to have a special Regigas from Mystery Gift that they don't distribute anymore.
Owen
Yes, its riolu and someone will give you an egg of it somewhere in the cave in iron island.
Its a battlegirl in Iron island cave.
There is not a legendary Pokemon, however Riley does give you a Riolu Egg.
Iron island the man gives it to you!
At the end of the cave on Iron Island, Riley gives you a Riolu egg.
You find him on iron island in the cave
no but you get the riolu egg in iron island
Go to the end of the cave and go down the elevator.
A Metal Coat can be acquired outside the Iron Island cave. You can get to Iron Island by talking to the sailor in Canalave City and he'll sail you there.
Registeel is in a cave right at the end of iron island. However, you have to do something to open the entrance otherwise there will be a blank wall.
iron island
Yes, its riolu and someone will give you an egg of it somewhere in the cave in iron island.
Iron Island
iron island but have some Pokemon that have HMS
Iron island and full moon island?
On iron island at the last room.
riolu