The Daily Grind: What's the hardest boss you've ever fought?

The video game boss is as traditional as it is feared. From the earliest days of the console generation to our fancy-schmancy Eminem-Os, gamers have cut their teeth on challenging villains such as the Sleeper, Mallyx, Tarinax the Destroyer and the Watcher in the Water. Boss battles always seem impossible at the outset, punishing parties with a complete wipe at a single mistake. Strategies are memorized, patterns are ingrained and teamwork polished until that big baddie hits the floor, sobbing like a baby.

So what's the hardest boss you've ever fought in a MMORPG? Was it an epic one-on-one battle, a harrowing party fight, or even a raid boss so mighty that its mere gaze stopped you in your tracks? What made this confrontation so difficult -- the sheer pool of hit points, the complex strategy or the way it almost seemed to cheat to win?

And no, "Hogger" doesn't count for this Daily Grind. These memes have a statute of limitations, you know.
This article was originally published on Massively.