Inhabitants - Negative Energy (TIP)

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How's this for a grand planar irony: There're more types of creatures "living" in the plane of Negative Energy than in the Positive. Since many of the inhabitants're actually undead, however, it all seems more easily reconciled.
==Energy Beings==
Like their positive counterparts, the xeg-yi probably come as close to a "negative energy elemental" as a body's ever going to find. These mysterious creatures roam the plane, only occasionally leaving and always attacking anything they come across (perhaps more out of curiosity than malice, but who can tell?).
Adventurers report having recently seen negative elementals and fundamentals, but the dark is that they're just creatures shaped from negative energy by powerful magic-sort of energy golems, really. However, beings truly native to the Negative Energy Plane include nightshades and blackballs. These creatures, as near as anyone can tell, exist only to spread death and destruction when off the plane and revel in the barren antilife environment of negative energy while in the plane-if such humanlike emotions or motives can be attributed to them at all
==Undead==
Undead creatures, particularly those of the noncorporeal type (spectres, wraiths, ghosts, apparitions, and so on), thrive amid the life-hungering energies of the Negative Energy Plane. Many in fact owe their existence, at least in part, to the essence of the plane. Lesser undead such as skeletons and zombies react to the abundance of negative energy in the same way as living beings in the plane of Positive Energy: They can't take the overwhelming surge of energy and explode. 
Occasionally, vampires, liches, and other undead creatures can be found here, either in secret magical fortresses or as temporary visitors. If any undead creature comes upon a living being in this plane somehow surviving the onslaught of the plane's natural attacks, they savagely assail the living interloper as an abomination. Undead utterly ignore xeg-yi and other natives of the plane.
==Powers==
Even the powers devoted to death and destruction harbor a good, healthy fear of this plane's all-consuming power. A few come occasionally to renew their link with the forces of ravenous destruction, death, and undeath. Thus, these aren't good deities we're discussing here.
Only one power calls this plane home, and he's not one a sod can expect to visit.
SIVA. The force of destruction incarnate, Siva is not considered evil by his worshipers or the rest of his pantheon. He's merely the avatar of ultimate annihilation who seeks to destroy the multiverse to make way for a vision of perfect nothingness. Within his realm, the Vortex, Siva meditates upon the best way to accomplish his goals and occasionally acts to protect the multiverse as it now exists-for any extreme change might disturb his own plan. Anything that enters the Vortex is utterly destroyed, and therefore no accurate account of his domain exists. Many Doomguard revere this power, but even they don't tempt their own obliteration by seeking him out.