You can't.
it's true. you can't sorry.
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I don't think you can get it without action replay, GameShark etc.
you can't catch it until you don't have a gameshark because its impossible to catch without gameshark
no you can't you have to either trade or gameshark cheats :P
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 can get a Cyndaquil without trading only by transfering it from a GBA Pokemon Game onto your Pokemon Diamond Version.
Sure thing. Although using gameshark is dumb. If you can't pass a game without cheating, then why did you buy the game in the first place.
equip the master ball to a Pokemon and clone it using the Pokemon clone cheat.. its so simple..
articuno zapdos moltres and mewtwo but you can also find mew, without gameshark or anything.
yes,you have to beat the Pokemon league 50 times to be able to go into space
You can't really get Darkrai without a Gameshark code, or R4. The only way to obtain him without cheating, I think is only through a Japanese event..
as far as i know you can't