Board Thread:General Discussion/@comment-32598036-20150126233202/@comment-25600444-20150127195750

For the out of control monster theory, Yes. For the dimensional traval, it's not so much the monsters directly but rather the means in how the denizens of the Worlds travel and connect to one another. We've seen all manner of monsters being brought transported to various worlds via cards, glyphs etc. Since Earth is the focal point for this activity due to Buddyfighting, there could be a unknown drawback to this with the Disaster being it.

If such a villian is drawn up, they'll probably be a Buddyfighter who will use a Buddy that understands his/her motives, they both understanding that for the beneifits of all worlds, it's best to cut ties with one another to spare each of them another possible Disaster.