Arceus doesn't even exist in firered.
Event Pokemon or Action Replay
no you cannot catch arceus in pokemon black without action replay
arceus
no
you have to get the arceus event on mystery gift.
sorry there is not a code, try gameshark
you can't
it has to be traded over or linked or by using a action replay
you cant
you cant do that you have to use action replay
Action Replay yourself a Master Ball.
You can't catch Arceus in Pokemon SoulSilver. You can only get it by obtaining it at a Nintendo event, or by using an Action Replay.