Atrocitus

The being known as Atrocitus (real name Atros) was born on planet Ryut, and was a survivor of the infamous Massacre of Sector 666, during which the Manhunters wiped out the life in an entire space sector (including his wife and his daughter) except for five lifeforms. These five became the terrorists known as the Five Inversions, led by Atrocitus, and sought revenge against the Guardians of the Universe and gained powers through dark magics. Over time, the demons would build themselves a strong following of worshipers and become known as the Empire of Tears. When the Guardians decided to rid the universe of magic to make way for order, the Empire crumbled and the Five Inversions were imprisoned and crucified on the planet Ysmault to serve out a long sentence for the crimes they had committed. However, the demons were still far from powerless. Through rituals and sacrifices, they discovered a black power so dark it was beyond the power of the Guardians' light.

Much later, Atrocitus was outraged with his associate Qull for revealing the prophecy of the Blackest Night to the Green Lantern Abin Sur. However, Qull's manipulations of the Green Lantern did aid Atrocitus in being released from Ysmault. Abin Sur took him from the planet against orders of the Guardians, traveling to Earth to use Atrocitus to help him find the source of this black power that was prophesied to consume the universe. In transit, Atrocitus exploited the fear these dark prophecies had infected Abin Sur with to free himself from his restraints. He severely wounded Abin Sur and caused them both to crash to Earth's surface, though Atrocitus fell from the ship while it was still airborne.

Atrocitus survived the fall and committed himself to locating the source of the black power on Earth. He used his blood rituals to discover it was to be found in a human named William Hand. He also constructed a cosmic divining rod to contain the power.

In finding William Hand, he was in turn found by two Green Lanterns, Sinestro and a rookie Hal Jordan. He used his cosmic divining rod on them to drain the power from their rings. With them no longer a threat to him, he continued his pursuit of William Hand. The two Green Lanterns managed to recharge their rings and catch up to him in time, but he was still a physical match for their power. He nearly killed Sinestro with a yellow crane and would have succeeded if Hal Jordan not surprisingly overcome the yellow weakness to stop him. Stunned, he was rendered unconscious by Sinestro, who triumphantly proclaimed himself the greatest Green Lantern.

Sinestro returned Atrocitus to Ysmault and renewed his crucifixion. But before the Green Lantern left, Atrocitus and his fellow Inversions had a prophecy for him. His homeworld of Korugar would descend into violent chaos as he focused on other worlds, and it would all spin out of his control. Sinestro disregarded the prophecy at the time, but Atrocitus succeeded in planting the seeds of fear in Sinestro that would see to his eventual downfall as a Green Lantern.

(borrowed from Comicvine)

Battle vs. Emperor Palpatine (by JWarrior89)
On board the second Death Star, Palpatine sits in his throne room. Suddenly, he hears the door slide open behind him; he rotates his throne around to see Atrocitus storming toward him, dragging the corpse of one of his Elite Guards by his neck. Atrocitus throws the corpse at Palpatine's feet. "Palpatine!" Atrocitus roars.

"Master Atrocitus," Palpatine responds, "You are stronger than I expected. I thought my forces would have granted you more of a challenge."

"I am fueled by rage itself!" Atrocitus growls, "You are a fool for thinking your pathetic guards could hinder me, and you shall pay for that foolishness with your life!"

"Are you threatening me, Atrocitus?" Palpatine asks, cooly.

"When I'm done with you," Atrocitus roars, "I will rip you in half and feast on your flesh!"

Palpatine gets up from his throne.

"So be it..." he says. He raises his hands and casts Force Lightning, but Atrocitus flies upward to avoid it. Palpatine continues to cast lightning, but Atrocitus manages to dodge it, then flies forward, slamming into Palpatine. He pins Palpatine against the wall and proceeds to viciously beat him. He then turns and throws Palpatine across the room.

Palpatine crashes to the floor, but quickly gets to his feet, drawing and igniting his lightsaber. Atrocitus fires several energy blasts from his power ring, but Palpatine blocks them all. He then reaches out with the Force, pulling loose part of an upper platform and hurls it at Atrocitus, who doesn't get out of the way in time and is sent crashing to the floor.

Palpatine grins at the sight of Atrocitus pinned under the platform, but his grin quickly vanishes as Atrocitus manages to push it off and get to his feet. Growling, he forms an energy blade from his red power ring and charges Palpatine. He swings his blade, but Palpatine manages to block it with his lightsaber. The two engage in a vicious sword battle.

For a while, the two are evenly matched, but then Palpatine enhances his movements with Force Speed, unleashing a flurry of blows that force Atrocitus back. Suddenly, Palpatine uses the Force to blast him against the wall, then leaps at him using Force Flight. He swings his lightsaber, but Atrocitus rolls out of the way, behind Palpatine.

Atrocitus lunges at Palpatine with his energy blade, but Palpatine quickly blasts him with Force Lightning, stopping him dead in his tracks. Atrocitus roars in pain as the lightning courses through him. Palpatine continues to cast lightning, forcing him to his knees. He then stops, and slowly approaches Atrocitus.

"Everything that has transpired has done so according to my design." he says, "Your pathetic Red Lantern Corps are heading into a trap. They will be put down like the mindless animals they are."

Atrocitus growls in fury.

"And now, Atrocitus..." Palpatine says, softly, "you will die..."

Atrocitus roars and stabs at Palpatine, but in one swift motion, Palpatine cuts off his hand with his lightsaber. Atrocitus cries out in pain as his hand, red power ring still on the finger, falls to the floor. Without the ring to circulate his blood, Atrocitus crumples to the floor and slowly dies. Palpatine deactivates his lightsaber and cackles in victory.

Winner: Palpatine.

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