You can only trade for Darkrai, otherwise there is no other way, because the event has passed.
Go to Toysrus on June 1st and receive darkrai
no you have to get the actionreplay, and then go to new moon island.TRUST ME!!! you will get it if you do that
SHORT ANSWER: You can't. LONG ANSWER: You can use a gameshark or AceKardi, but i assume that by action replay you mean a chearting device.
You cannot get Darkrai without an event.
You can't
get cheats on a actionreplay.
get darkri thu the special event.
you cant get it with out actionreplay
Nope.
ActionReplay
update your action replay
Event which is long gone, or trade from a friend.