nothing, there just there to catch to fill out your browser.
trade them
First get all other 266 Pokemon in the Browser then you will get a mission to go to hippodon temple. Catch the 3 Regis then go down a hole in the temple put the three regis on these things then you vs Regigigas
The Pokemon is Regigigas and you have to capture everyone else first then go to the ranger union and talk to chair person Erma. Then they will talk about a mysterious quicksand hole in Hippowdown Temple. Also you must have the three regis to open the door.
Regigiga can be found in the Hippowdon Temple on Pokemon Ranger: Shadows of Almia. To find him to need to have completed all 60 quests, completed the Browser and have the three Regi Pokemon with you. After finishing the above a secret room will open in the Temple with three places to put the Regis. Once you put the Regis on the pedestals Regigigas will appear for a battle.
By migrating from Pokemon emerald is wrong,a bit there are three ways 1.by migrating 2.by trading from Pokemon ranger 2 3.or you can get them on platinom (4)you can get from action replay 4 is easier but is cheating
you can't get the three regis but, if you have pokemon sapir\rubi\emerald version on the gameboy advance, you can tke the three regis through the pal park in route 221 (in south). *there are three caves that may be the caves of the three regis but i don't know what to do there.
trade from emerald
Migrate from Pokemon ruby emerald Sapphire
No, they will need to be traded.
first you have to beat the elite four, then trade the three regis onto your game, then go in
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.
no you do not just the Pokemon relicanth and wailord.