This is the Main Legendary of the new region, and is made up of pure evil. In truth, it's not relly a pokemon, but is just a form that the the evil creature took. My idea is that whatever from that one movie where they tried to make groudon was, this is what that was, and as such this would be partially it's true form, with it's real true form being nothing more than pure magma.
If I was to have a game this pokemon would actually not be available for capture, and instead would only be allowed through a special event, kind of like the way Genesect was.
153. Volnecross (Physical Form)
Name meaning: Volcano - Necris (Evil/Darkness/Death) - Cross
Credits: Because I did not create the sprites used to make them, nor the creatures in which this was formed (and what it became), I give credit to those who made it possible for me to do this. Thank you.
Nintendo - Pokemon being a product of theirs.[link]
- Where the sprites came from that were used.