What is the esayest way to get the regis in pokemon emerald with out cheats?
Actually you're wrong you can NOT get the regis in Pokemon diamond, to get the regis you need Pokemon ruby/Sapphire/emerald you can get all three regis there(regi ice, regi steel, regi rock) althought if you migrate all of the regis onto Pokemon diamond you can get regi gigas(king regi) you will find him in the snowpoint temple after beating the elite four. Thanks hope i helped ^.^
Let me tell you where you can find all the Regis in Pokemon Emerald. Regirock: You can find Regirock in the Desert Ruins; I dunno where exactly it is. Regice: You can find Regice in Island Cave, which is in Route 105. Registeel: You can find Registeel in the Ancient Tomb, which is in Route 120. Hope I helped :)