Imagine that you discovered life on another planet. Unfortunately, it's gross life, like a race of giant cockroach-rat-spider-dannydevito-daleks. Sure, you could leave them alone or try and make peace, but honestly, your grand-kids' dreams will thank you for just wiping them out entirely. To help you inflict maximum damage on this horrific alien race, you're allowed to ask one anime villain for help (no hero would agree to aid in xenocide).
Here's the week's discussion question: What anime villain would you unleash upon a disgusting race of aliens to maximize their destruction?
Kira wouldn't make a great choice, these aliens don't have names...