if you have an action replay you can get lots of cheats from neoseeker.com
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do it yourself
well you can do it with cheats or by yourself
you can't do that you need a action replay or R4 if you want cheats. or.... you could probably use the events to get legendaries.but i know you can't use cheats without a action replay
Either trade from a differnt game or cheats. Only way(s).
No, the only way is to do cheats or an event, and there are no more events for Pokemon Heart Gold because there is a new Pokemon game they are doing special events on.