They Accidentally Time Travel Through A Mirror That Leads To Alternate Realities And New Discoveries 

Wow. They just start killing their counterparts. Why not just collaborate with their doubles in order to take over the multiverse? And why would they leave the unattended mirror in the active position? On the other hand, collecting all that advanced technology was a good move.

Dang. They were all scummy no matter what Universe they were from

Well Damn.. Thats one way to go about things

This is a takeoff of the episode "The Magic Mirror" from the1960's "Lost in Space" tv series.

Dirty Deeds Done Dirt Cheap

First yippee kiay