action replay might have something
no
you can't
you can't. plain and simple
you cant dumb dumb
You can't get new Pokemon into old games. Lucario is a 4th generation Pokemon and emerald is a 3rd generation game.
not without a game shark or action replay but you could trade from emerald or sapphire.
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You have to upload it from FireRed, LeafGreen, Ruby, Sapphire, or Emerald.
GAME SHARK!!!!!!!!!!!!!!!!!!
You have to hit L going through the door and reset it while saving after first fight.
You are not able to. There is only one way, but that is only for emerald, gold and silver editions.
Use a game shark or play via an emulator and enable a cheat.