Apparently Conquering or even destroying the Human race is a whole lot Easier than conquering or destroying Equestria. Those insignificant hairless bipeds have no magic and are nothing more but weaklings and cowards. They’re easy to destroy or subjugate and they lack any will to resist. Nothing Can go wrong in conquering them. It’s not like they have city-destroying weapons to defeat us at all. Nope. This campaign should be one swift Piece of Cake. Amirite?
 
Still rockin’ with the idea of the Human World being invaded by an all out attack of as many unredeemed and overpowered villains in all of Generation 4. Seeing the Humans getting their ass kicked by this Legion of Doom and getting their cities trashed and burned by them.
 
The Reason the sirens are included is because in this scenario, they have reverted back to their villainous selves after the legion of doom restored their crystals.