This is Super Sylveon's home stage (if the filename and internal name did not
give enough clues.) If you do not want two Super Sylveons present at once, or
just want all of the characters gone, there are alternative def files inside
the folder

SuperSylveonPlains.def - Full package.
SuperSylveonPlainsNoSylveon.def - Without Sylveon, Snivy, and Scolipede.
SuperSylveonPlainsNoPokemon.def - None of the characters in the BG at all.
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If you are ever going to edit this stage at all, please keep the readme
and the fundamentals of the stage's alternate defs intact.

If you want to pick and choose which Pokémon will be there, then everything
inside the def is completely labeled and commented for you to pick and choose.
(Greninja 1 is on the right side, Greninja 2 is on the left side.)
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Credit

Neweegee - Sprites
Opiup - Stage
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There's additionally some IKEMEN Go stage viewer malarky I threw in there
and if it doesn't work properly, add portraitscale = 1 onto the info 
section.


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How to assign characters a stage

On the select.def that you are using, you can assign a character a stage.
All you need to do is put a comma, then the stage directory. Now when you
fight the character in arcade mode, you will always fight them on that stage.

Ex:
charactername, stages/stagedeffilename.def
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