Say, Matt. Got a question about the maker here. Is it necessary to change the appearance of the wild monster you get? All I want is the changes in IVs (and possibly other changes) when I meet a monster.
Does this also apply to monsters handed to you and/or traded in game?
The pokemon maker does not apply to wild pokemon. All it does is put your custom built pokemon in the box and slot that you choose. For example, if you choose box 1/slot 1 when you make your pokemon, the pokemon will appear in box1/slot 1 of the pc when you enter the code. You can't apply the codes to existing pokemon, you can only make new pokemon. Also, make sure that there are not any pokemon in the slot that you choose or else the existing pokemon will get replaced.