Posted By: FishingFrenzie, if you have any questions, contact me at punted@live.com.au :D
Before the three Regis can be caught, the Sealed Chamber on Route 134 must be unlocked.
You must enter the second room of the Sealed Chamber with Relicanth at the top of the party and Wailord at the bottom of the party. This causes an earthquake to occur that opens the doors of the three Regis' hidden caves... Note that the party positions must be reversed in Pokémon Emerald.
In order to get Regice, you must enter the Island Cave, which is on Route 105. The Braille puzzle in the Sealed Chamber on Route 134 must be completed. The player must make a counterclockwise lap of the chamber, sticking close to the walls, after reading the inscription. This will open the door and allow one to face Regice.
To get to Regirock, go to The Desert Ruins on Route 111. The Sealed Chamber's puzzle must have been completed. After this has happened, the ruins can be accessed. When you are in the lobby area, at the Braille inscription, the player must go two steps left, then two steps down, and afterwards use Rock Smash to open the door.
To get to Registeel, go to the Ancient Tomb on Route 120. the ruins must be opened by completing the Braille puzzle in the Sealed Chamber on Route 134. Once inside the lobby area of the tomb, the player must use Flash in the middle of the room to cause the door leading to Registeel to open.
Note that these three PokeMon are extremely hard to capture without a Master Ball, as they will knock themselves unconscious with Struggle before you can capture them easily with Ultra Balls. I had to Paralyze them first, and they took at least a hundred Ultra Balls each to capture.
no
You are not able to catch the regis in Diamond. You can catch them in the Game Boy Advance version of Pokemon Emerald.
you can only catch them in Pokemon emerald, sapphire, or ruby
not. you will have to migrate them from emerald
You Can't
no you do not just the Pokemon relicanth and wailord.
You don't need to go in any order.
all i know is how to get the regis and latios or latias.
For Pokemon ruby you can catch the three regis, rayquaza, groudon, and latios/latias. In sapphire you can catch the three regis, rayquaza, kyogre, and latios/latias. However, in emerald you can catch kyogre, groudon, rayquaza, the three regis, and latios/latias.
you can't- make Pokemon migrate from Pokemon ruby/sapphire/emerald or trade from diamond and pearl or platinum.
Rayquaza, Kyogre, Groudon, The Regis, Latios and Latias, and a lot more.
well, when you catch all of the regis in either Pokemon ruby, Sapphire, or emerald put them in Pokemon diamond or pearl using pal park and you will be able to find regigigas