The One and his followers.

Follower of The One.

The One is a grotesque creature, looking like the Baby-Face mobs you might have encountered in higher level missions. He's never found alone always with a handfull of his Followers (all around lvl185), various random and often with his righthand man 'Harbringer of the One' and himself at lvl200 and a hpbar half the length of your screen taking him downs isn't exactly a walk in the park. But The One drops several very, very nice items that are much sought after all making the efort well worth the gain.

	Breastplate of Spiritual Rites
	Helmet of Spiritual Rites
	Breastplate of Technical Ceremonies
	Helmet of Technical Ceremonies

The screenshot below shows the layout of the area around the spot where they spot. The four Followers spawn in a rough circle around the spot where either The One or the Harbringer of the One will spawn. You can see them in the center of the screen shot.

This is the area where you will find them.

You will need to kill the Harbringer to get a chance of The One to spawn if he is not up when you arrive, he's on a 20minute timer so if your unlucky you may need to pack a picnic waiting for The One to spawn.

When The One spawns, or if he's already up depending on your raid forces levels your going to need a good puller for the Followers and the pesky 'Pet of The One' that The One spawns 2-3 of so that you dont get swamped. It is possible if you have a good mezzer to calm the adds altough they have high resistance so puller is generaly the prefered method. And you need to beware as both The One and his Pets love to warp random teams members to them and they hit severly hard so make sure you have a good doctor or maybe two at hand as well as a good tank to take to flak off the squishier raiders.
Although I must add if you do have a few high level friends (post lvl200) its is possible to take down The One with just a (very good) Doctor a (very good) Enforcer and a def'ed up Engineer spaming blind auras.

Pet of The One.

The drops from The One are relatively random and none of the items seems guaranteed to drop on any given time he is killed, but rest asured you local nanoclass' and engineers will love you forever taking this guy down.

So there you go, could luck and happy hunting!