Ever since the death of the Overmind the Zerg have divided into factions, the two largest being that of Kerrigan and that of Daggoth. Kerrigan commands support of the younger Cerebrates, while Daggoth commands the elders, in a clash of conservative vs. liberal. In the end Kerrigan won, and Daggoth and his followers were forced to flee into deep space. Their current base of operations lies on the ash world, Kodulas, a planet the Zerg conquered on their way to the Koprulu Sector from Zerus. Daggoth plans to retake Kerrigan's territory for his own, but first he must regroup his minions. In the meantime lesser Cerebrates and Zerg agents are working in the shadows in order to pave the way for the Swarm's return. While Daggoth is the supreme commander a ruling body of eight Cerebrates administer the day-to-day needs of the Zerg.
Name: Xaax the Defiler
Type: Defiler
Weapon: Acid Spray
Allegience: Lich
Brood
The oldest, most experienced, and most powerful hunter of Nargil's brood, Xaax's tracking abilities are legendary in the Swarm. Monopolizing the power of the Remains of the Overmind Xaax has become the undisputed puppet master of the Renegade Swarm, having placed the Remains under his claw. So confident he is in his newfound power that Xaax is arrogant and lords his power over the Cerebrates under his control. He augments this with his newfound ability to directly wield the dark energy, thus giving him the ability to annihilate reincarnation abilities.
His Giga Attack is Hydra Storm, a water elemental attack. When a large water source is nearby Xaax uses his dark energy to fuse with the water, and sends it out in a massive wave of forces that sweeps away his opponents. Lesser foes are crushed by the impact of the dark energy-infused water.
Having overcome his personal desires in favor of the Swarm Xaax loathes the
Protoss and Terrans for the time they spent with him. Xaax intends to lead
the Swarm in a terrifying war to annihilate Kerrigan's forces for good, and
cares little for his former comrades.
Zargil was the one who sent Thakras and Parakas after Xaax; after Xaax returned,
having conquered both of them, Zargil's position was lowered severely-- much
farther than his previous betrayal. He is very consciencious of this, and
will stop at nothing to prove to his peers that he is still as great as he
was before losing his position on the Command Wing. The leader of the Renegade Cerebrates Daggoth is second only to the Overmind's
power in the Swarm-- although with Xaax's appointment to proxy the Overmind's
power Daggoth's power has decreased. Initially distrustful of Xaax's elevation
over him the ancient Cerebrate grudgingly admits that the Defiler may be a
powerful general.
Name: Zargil
Type: Cerebrate
Weapon: None
Allegience: Sennith Brood
Name: Daggoth
Type: Cerebrate
Weapon: None
Allegience: Tiamat Brood
Name:
Flame Spike the Crawler 
Type: Mechalisk
Weapon: Subterranean Spines, Plasma Launcher
Allegience: Lich Brood
When Xaax returned to the Swarm he brought with him the knowledge how to create his own Zeji Spawn; Flame Spike is his champion. This lethal enforcer is all brawn and no brains, as it answers directly to Xaax, and Xaax alone.
In truth, after he was removed
from Diablo II with the latest patch Xaax offered the pre-placed Champion
monster a new job, which he enjoys far more than sniping the Inner Cloister
waypoint.