For those born without a sense of humour, Halopedia has an article on Drain Power Drain.
AV Johnson
This article is too damned short, Marine! You will help Gruntipedia by making it larger so it will fit the screen, fool!

The Power Drain, also known as Great Blue Ball of Death (go ahead and make your sick jokes), will slowly kill anyone inside its blue field, making them vulnerable so they can watch themselves get tea-bagged to death. The Great Ball of Death is the yang to the yin that is the Great Yellow Ball of Protection.

It is primarily used by noobs who don't like how someone else gets "their" Energy Sword or Gravity Hammer that "happens" to belong to them. But don't listen to the noobs, it's actually an AT-4 Magnetic Super Pulse Mine...that pulses and sticks on vehicles!

How It worksEdit

It works through the power of gruntiness. You see, everything in the Universe has gruntiness, even if it's a tiny bit. The Power Drainer, however, has a gruntiness level of 0. (as a matter of fact, it is powered by hunterishness).

That means it is always trying to suck in gruntiness. So when you deploy it, it sucks the gruntiness out of everything around it. Then, when it has a gruntiness level of 9001, it explodes. But remember, if you are an incredible noob, you may get f*cking pwned and teabagged, which you deserve.

Useful Equipment
Gruntiness' Dumb Brother | That Green Orb Plant that heals you | The Mine that can be seen a mile away | Yellow Ball of gay-version of Gruntiness | Blue Shield Thingy
Crappy Equipment that makes you wonder why Bungie put them in Halo
Blue Ball of Suckage of life | White-yellow soup fog | Feel the breeze under you | Thing that makes radars play music and go insane
Other stuff
Good for ugly people like Brutes | Most abused by noobs | Something your mom uses everyday