Doomsday
Real name: Doomsday
Full name: Doomsday
Aliases: The Ultimate Lifeform
Alter egos: Doomsday (Hunter Prey), Doomsday (New 52)
Creator: DC Comics
Alignment: Bad
First appearance: Superman: The Man of Steel #17 (Nov 1992)
Place of birth: Krypton
Occupation: Destroyer
Teams: Secret Society of Super-Villains, Justice League Elite
Gender: Male
Race: Alien
Height: 8'0 • 244 cm
Weight: 915 lb • 412 kg
Eye color: Red
Hair color: White
Superpowers: Accelerated Healing, Adaptation, Agility, Cold Resistance, Durability, Energy Absorption, Energy Resistance, Heat Resistance, Invulnerability, Jump, Natural Armor, Natural Weapons, Power Absorption, Reflexes, Regeneration, Resurrection, Self-Sustenance, Stamina, Super Speed, Super Strength
Stats: intelligence 90, strength 100, speed 65, durability 100, power 100, combat 90

History:
Doomsday was artificially created by Bertron, a mad scientist with no morals working on Krypton, Superman's home world, though neither he nor his creator were Kryptonian (this was done prior to humanoid life evolving on Krypton). Bertron wanted to create the ultimate lifeform. In order to do this, they sent a baby onto the surface of Krypton, where it would be killed by the harsh environment or vicious creatures that inhabit the planet. Each time, the lifeform's remains were harvested and used again, to create a better, stronger version of the last. In short, the mad scientist was using the method of cloning to accelerate the evolution of the being he was creating. Through decades of this process, the being which would eventually become Doomsday was forced to endure the agony of death, thousands upon thousands of times; the memory of these countless deaths was recorded in his genes and drove it to hate all life. Bertron himself met his death at the hands of his own creation.  The nameless being later to be called Doomsday was artificially created in the distant past on Krypton, long before the humanoid Kryptonian race had gained dominance over the planet. During this time period, Krypton was a violent, hellish world where only the absolute strongest of creatures could survive (at the time, the world's dominant lifeforms were said to be the most dangerous creatures in the universe). Doomsday's creator was a mysterious alien named Bertron, who wished to create the ultimate life-form. To do so, Bertron and his team sent a baby onto the surface of the planet, where it would be instantly killed by the harsh environment or the vicious creatures inhabiting it. Each time, whatever of the lifeform's remains that survived were harvested and used again, to create a better, stronger version than the previous. In short, the mad scientist was using the method of cloning to accelerate the evolution of the being he was creating. Through decades of this process, the being who would eventually become Doomsday was forced to endure the agony of death, thousands upon thousands of times; the memory of these countless deaths was recorded in his genes and drove it to hate all life. Eventually, Doomsday gained the ability to evolve against what killed him in his prior life without the need of Bertron's technology. At this point he proceeded to hunt down and kill all of the lethal creatures that inhabited Krypton. Bertron himself met his death at the hands of his own creation.  Doomsday escaped Krypton and went on a killing spree across several planets. He began with crashlanding on Bylan 5 (245,000 years ago), a planet where Darkseid was about to wed a princess (in order to obtain that planet's chemical deposits for Apokolips' weapons factories). Just as Doomsday and Darkseid were to meet in combat, Darkseid was forced to flee as the battle had caused the planet's atmosphere to become toxic and therefore worthless to Apokolips. Doomsday managed to hitch a ride on an escaping shuttle.  This shuttle eventually crashed on Khundia. The warring Khundian clans united in order to build protective armor for a warrior named Kobald. His goal was to survive long enough to force Doomsday onto a rocket. Once the rocket was in space, Doomsday killed Kobald and the resulting explosion sent him hurling through space.  He would next come across the path of a Green Lantern named Zharan Pel. Doomsday took his power ring and sensing the power of the Guardians of the Universe, made his way to them. Hundreds of Green Lanterns were sent to stop him and were killed. He continued to Oa where a single Guardian sacrificed himself in battle to defeat him. With Doomsday dead, the Guardians turned their attention to rebuilding the Corps.  In reality, the release of massive energies by the Guardian had caused a tear in space through which an injured and unconscious Doomsday fell. Eventually coming to Calaton, he tore that world apart for three years. With only the capital city left, all the members of the royal family combined their life forces into a single energy being, The Radiant. The Radiant killed Doomsday with a huge blast of energy (laying waste to over a fifth of his world in the process). In common Calatonian burial procedures, Doomsday's body was shackled and masked, and due to his status as a murderer, was shot into space. Eventually, he would land on Earth, the force of the impact of his landing driving the casket deep underground. Doomsday, however, was not dead, as any time he would be "killed", he would return, having evolved past whatever defeated him.

Powers:
  Doomsday was created and evolved through cloning an infant and having it killed over and over again by one of the most dangerous species of the universe and in one of the harshest habitats in existence, prehistoric Krypton. As such, he returns to life every time he dies and becomes near invulnurable to what killed him before. His entire body is built as a defensive structure which continues to arm itself the more it is damaged.   Superman used a sound gun to paralyze Doomsday, but Doomsday's auditory canals closed making him impervious to the weapon. Waverider paralyzed Doomsday once with "chronal" energy, but the second attempt backlashes on him.   He also has a highly accelerated healing factor that allows him to heal and regenerate from most damage almost instantly.   The monster can replicate and store the special abilities of any super-beings in his immediate proximity using "Absorption Cells".   With his strength, Doomsday can easily overpower and kill humans and other aliens like Kryptonians, and can bend and break through reinforced steel, destroy impenetrable barriers, and can lift extremely heavy objects, and uproot trees and buildings/structures as well as decimate them with his might. He is strong and powerful enough to overcome entire rosters of superhumans, like the Justice League.   Doomsday is almost completely resistant to all forms of physical and mental types of harm, and as such, bullets bounce off him, rockets, lasers and bombs will not leave a mark on him, and high-voltage energy emissions cannot penetrate through his tough hide.   He can survive in space and can even operate while in the direct presence of space vacuums, vortexes and wormholes, and he does not require oxygen, water, or any form of nourishment to maintain himself.   Doomsday can take part in super-powered battles for months on end. He fought Superman through Metropolis for days of physical combat until even the Man of Steel was broken.   Most surprising is his speed for his bulked size. In a matter of moments, Doomsday managed to render most of the Justice League incapable of fighting.   He was incapable of flight but due to his extremely dense muscles in his legs, he can leaps miles at a time. Superman took advantage of this in their first battle by attempting to keep him airborne. He also used it to his advantage when he deposited Doomsday in a lake to slow him down.