Talk:Mewtwo VS Shadow/@comment-27416494-20160611000715/@comment-27416494-20160611004620

Appearances aside, BWG and Onslaught were artificially created beings known for defeating the local heroes time and time again. As the "darker forms" of beloved characters from their respective franchises, they single mindedly exist to achieve a certain goal.

As for Deoxys, it's all about sharing similar psychic powers to be honest.