Doomsday

Origin:

Doomsday's "father" was an emotionless alien named Bertron, a geneticist who arrived on Krypton several hundred thousand years ago when lethal and deadly monsters roamed the world.  He was obsessed with creating a creature that could survive any environment and even cheat death itself.  Bertron subjected his test tube infant to Krypton's harsh landscape and its savage, hungry denizens, using the best of the surviving genes to improve his next  cloned creation; this harsh process was repeated over and over endlessly, in a mockery of natural evolution.   Doomsday was intended to be a perfect being, and live forever using induced evolution to defy death.  Doomsday endured death from extreme weather conditions to being slain by monsters. It finally got to the point where Berton wasn't needed to revive him through cloning.Though it cost him his life, Bertron succeeded in altering The Ultimate Lifeform's DNA so that the creature could regenerate each time he was killed.  Further more, Doomsday would then evolve an immunity to whatever caused his demise. Unfortunately Doomsday was subjected only to death from all things. This led the ultimate being to grow a hatred for all living things. Doomsday single handedly rid Krypton of its most lethal creatures.

Once he became powerful enough to defy Bertron, he destroyed every living creature he could find including his creator.  One of Doomsday's first encounters was with Darkseid on a world called Bylan 5. Darkseid was seeking resources to better Apokolips. The battle between the pair left Bylan 5 useless to a wounded Darkseid who fled from the relentless Doomsday. He then crashed his way to the world of Khundia and resumed his path of destruction. The people of Khundia put their faith and technology upon a brave warrior named Kobald. He received enforced armor to battle Doomsday. There was no means to kill Doomsday so Kobald's job was to force the monster off the planet by rocket. Kobald died as the battle with Doomsday exploded the rocket. Doomsday would be left adrift in space. He likely died and revived to be able to survive the vacuum of space. World after world found that they could not kill him, only exile him, and hope that others would fare better. Doomsday would eventually cross the Green Lantern, Zharan Pel who didn't last long. This encounter gave Doomsday awareness of the Guardians of Oa. The monster found his way to Oa to slaughter many of the dedicated Green Lanterns. A Guardian gave his life to cast Doomsday in dimensional rip in space. This hurled Doomsday to the world of Calaton full of advanced technology that was all useless. He would spend years bringing horror to this world.One of the royal families decided to give their lives and focus their souls into one Radiant being. Radiant was unleashed to battle Doomsday. This would last a week since Doomsday had never before encountered such a being. Radiant had to destroy most of Calaton to finally put Doomsday down. For some reason Doomsday was give a custom burial by the survivors of Calaton. Although for Doomsday's crimes he would not be buried on Calaton. He was chained in a ship and casted back into the stars fromwhence he came. This is when he would crash down upon Earth and lay dormant for some unknown amount of years                                                                                        .     

Death of Superman

Doomsday woke beneath Earth and made way to the surface. On the way he killed a group of Underworlders that mistook Doomsday as one of them. Doomsday, finally among the living again, resumed killing whatever he set eyes upon with his one arm that was freed from his bonds. He ravaged a countryside before the Justice League arrived with Ice,Blue Beetle,Booster Gold,Fire,Bloodwynd(Martian Manhunter controlled by Rott),and Maxima. The group came to save a family from an unknown disaster. They found Doomsday who made quick work of all except Maxima. Booster Gold was the one to give the monster his iconic name.Maxima held her own against Doomsday until Superman arrived. Everyone was relieved until Doomsday easily kicked Superman through the home of the endangered family. Once Doomsday felt all threats were done he left the scene. Constant ads and TV shots of wrestling embedded a single objective upon Doomsday, Metropolis. Superman gave pursuit and realized Doomsday was heading to the city. He encountered Doomsday in Metropolis with Supergirl arriving to help. She is taking out by Doomsday in a single punch. Superman fought Doomsday unable to deal in critical harm until breaking his exoskeletal bones about his body. The pair would fight with impacts breaking apart Metropolis. Superman had gained Doomsday's full attention by this point due to his Kryptonian DNA. Doomsday dealt mortal wounds to the Man of Steel which few had ever since before. Doomsday was killed by a blow to the head which was given to Superman as well. While the world mourned Superman, Doomsday's body was taken away to be studied.The villainous cyborg, Hank Henshaw, masquerading as Superman flung Doomsday into space. This is when Doomsday would resurrect and find himself traveling the cosmos once again.

Hunter/Prey

Doomsday Wars

Doomsday's Demise

When Imperiex threatened the universe, several villains were dispatched; calling themselves the Suicide Squad, they were sent to retrieve Doomsday.  Though he destroyed several Imperiex Probes he was no match for Imperiex himself,who killed him with a slew of cosmic fire.

The Nightmare Returns

After being destroyed by Imperiex, the creature returned again; this time he lay dormant and subdued in the subterranean levels of the Pentagon until released by the Joker.  This step in his evolution saw him gain intelligence.  He was self-aware and able to understand, which at first seemed to make him more deadly.  For the first time, Doomsday felt doubt when Superman confronted him with the reality of his own mortality.

Eventually, Doomsday sacrificed his newfound intellect to save Superman.  He has been used as muscle by several villains since then including Darkseid and Doctor Psycho. In the end, Doomsday once more fell under the control of the U.S. Government. More specifically, Samuel Lane and his anti-Kryptonain operation.

Doomsday's most recent appearance was tied with the arrival of the city of Kandor and it's Kryptonian inhabitants on Earth. Kal-El had brought his Uncle and Aunt along with a delegation to meet with the United States President in Metropolis.The meeting was going well, Zor-El and the President managing to even joke about Kara's recent experience with Air Force One. Doomsday suddenly arrived from the sky, interrupting the meeting and causing a panic.

Kal immediately leaped into action alongside Kara to deal with Doomsday, who made a beeline for Superman. Doomsday was able to shrug Kara off, throwing her into a nearby building before turning his full attention to Kal-El. Kal was able to block Doomsday''s first punch, though the shockwave damaged buildings for almost a mile radius, much like in their first encounter. Kal was staggered, but before Doomsday could take advantage of the opening Kara attacked him, allowing Zor and other Kryptonians an opening to attack him.

Doomsday began battling Kryptonians indescriminately, while it was revealed that his presence had been known to the residents of Krypton. He was still able to manhandle his opponents, hurling one Kryptonian through several buildings. He caused Kal to question whether or not he still retained his intelligence when he hurled the memorial statue of Kon-El at him and Kara. To protect the citizens of the City, even though they had already cleared the area, Kal and Zor led the Krytonians as they dragged Doomsday to the Moon to continue the battle. Doomsday was able to withstand the Heat Vision of multiple Kryptonains, and once more targeted Kara, knocking her away. In a fit of rage, Zor and Allura led the citizens of Kandor in a vicious assault on Doomsday. They were able to beat him to death in mere moments. 

Somehow General Lane was able to retrieve Doomsday's corpse. He gave the remains over to Lex Luthor after showing him the potential that was held in it.  Luthor went to work on the corpse, trying to figure out how to guide it's rebirth to make Doomsday even stronger than ever. He has come up with a few good ideas, one being coaxing Doomsday to grow some time of biological weapon. Doomsdays return will be a major event, having been beaten to death by a Kyptonian mob he would already have returned able to overcome such a death a second time. With Luthor as the driving force behind his resurrection one can only wonder how he will return now.  
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Powers

Doomsday is extremely strong and powerful, able to match the strength of Superman in their fight, and in the Hunter/Prey mini series he is able to break Superman's arm, despite the fact that Superman was experiencing a massive power surge.

He is nearly invulnerable and has unlimited amounts of stamina, able to keep fighting with Superman for an entire day without tiring.

Doomsday could be considered immortal.  He is resurrected after every time he dies, although how quickly he resurrects depends on how he dies.  It would take thousands of years for him to be born again if his death was similar to the one Imperiex inflicted upon him (burning him to a skeleton).  His design allows his DNA to adapt and become invulnerable to the cause of his death the next time he is born.  Having lived for many years, he had experienced a huge amount of death and agony, which drove him to hate all life.  Along the lines of evolution, he can develop weapons to counter his previous deaths, such as the time he breathed flames against Martian Manhunter or when he canceled Radiant, a being of pure energy, by generating an aura of energy and slamming it into Radiant.  Engaging Doomsday in physical combat will mean almost certain death; almost 100% of those who have challenged him have lost their lives.  He even once knocked out the lord of Apokolips. Also in superman/Batman #47 doomsday is recreated with kryptonite crystals instead of rock.

Doomsday has a very fast healing factor, healing him almost instantly from any damage done.  He does not need to sleep, eat, drink or even breathe and his body is mostly solid, with his few vital organs protected by thick layers of bone.  He can survive on the most vicious environments, including space.

In his latest rebirth, Doomsday finally gains intelligence.  Though this is later undone, it is possible he may again develop this ability though he might have a different point of view next time.

DCAU

Doomsday appears in the popular animated show Justice League and Justice League Unlimited. 
   
 Justice League Episodes: 
Justice League Season 2, Episode 11 - A Better World: Part 1 (2003) 
Justice League Season 2, Episode 12 -  A Better World: Part 2 (2003)     
 
 Justice League Unlimited Episodes:      
Justice League Unlimited Season 2, Episode 3 - The Doomsday Sanction (2005) 
      
 Legion of Super Heroes:
He appears in the episode "Phantoms" as a prisoner of the Phantom Zone.
 
 Superman: Doomsday ( Animated Film, 2007): 
Doomsday appears in the 2007 animated  film, Superman: Doomsday. 
 

Smallville

Davis drenched in liquid Kryptonite

Davis kisses Chloe

Video games

Doomsday is in the video game Death and Return of Superman.The game is for the Super Nintendo Entertainment System and also Sega Genesis.
 
 Doomsday also appears in Justice League Heroes as a bunch of Doomsday clones controled by Brainiac. The game is for  Xbox  Playstasion 2, PSP, and Nintendo DS 
 
 Doomsday will also be appearing in    DC Universe Online    (MMORPG, 2010).