Darkrai can be found at Newmoon Island, but you can't do it without cheats. If you use the walk through everything cheat and you are at Full Moon Island, where you can find Cresselia, you have to walk to the right until you get at Newmoon Island. There you can interact with Darkrai.
You dont catch Darkrai in Pokemon Pearl. You can catch it in Pokemon Platinum at level 40.
In Pokemon Pearl, you catch Palkia in the Spear PIllar.
you catch him
Darkrai has the catch rate of maybe the lake pokemon( Azelf, Uxie, and Mesprit) seperate.
You can't catch Darkrai in Pokemon FireRed, it is a 4th generation Pokemon so therefore unavailable in any of the GBA Pokemon games.
Darkrai is a dark type of Pokemon. You can catch one in Pokemon Diamond version on Newmoon Island but you need a membership card.
No, you cannot catch Darkrai in Pokemon White.
You can only obtain Darkrai through Poke Transfer in Pokemon White/Black.
you cant. But you can get it in peal and trade it to diamond.
Catch palkia/dialga at mt.cornet
with a special event
NO