You have to have mystery gift and Wi-fi connection. Press Mystery gift on a special day when starting the game press receive from wi-fi then pick it up at a pokemart go to the locked hotel in that city by Jubilife City and go in talk to the man then go to sleep in the bed and darkrai will appear. For more information like how to get mystery gift contact me at likefruit89@Yahoo.com.
Darkrai
No.
Nope
action replay
Darkrai.
Ok the answer is yes, but only throught the darkrai event
Darkrai is a Pokemon from Generation IV, and Pokemon ruby is a game from Generation III , so you can only get darkrai in Pokemon Platinum, Diamond or Pearl
You dont catch Darkrai in Pokemon Pearl. You can catch it in Pokemon Platinum at level 40.
You need an event.
with a special event
In harbor inn
No you don't have to.