His creator imbued him with few feelings, mostly hate and desire for destruction, which led to his destroying worlds and eventually finding Earth, where he met Superman.

Originally known as "The Ultimate," Doomsday was born in prehistoric times on Krypton, long before the humanoid Kryptonian race gained dominance over the planet about 250,000 years ago.

[7][8] In a cruel experiment involving evolution, intended to create the perfect living being, the alien scientist Bertron released a humanoid infant (born in vitro in a lab) onto the surface of the planet, where he was promptly killed by the harsh environment.

As it evolved, the child eventually became able to survive the high temperatures and searing atmosphere, only to be quickly slain by the vicious predators that inhabited the planet.

Over time, and without the assistance of Bertron's technology, he gained the ability to thrive on solar energy without the need for food or air, to return to life and adapt to overcome whatever had previously killed him.

The warring Khundian clans united to build protective armor for a warrior named Kobald, who they hoped would survive long enough to force the Ultimate onto a rocket.

[9] Most notable is that the creature fought the whole time literally with one hand tied behind his back (due to his ancient burial cables), yet was still able to lay waste to all opposition and much of the surrounding area.

Five Leaguers, including Superman, combined their energy powers to take down Doomsday, but succeeded only in destroying the last of his burial cables, allowing him to use both hands, thus worsening the crisis.

During his rampage, Doomsday's interest was captured by billboards and television spots advertising violent wrestling competitions held in Metropolis, which appealed to his blood lust and enticed the otherwise mindless creature to head towards the city.

After strapping the body to an asteroid with an electronic device attached, the Cyborg Superman flung Doomsday into deep space on a trajectory supposedly certain to never intersect any other planet.

Doomsday tore through numerous probes with seemingly little effort, while aided by Superman – the only time the two enemies would come close to teaming up – before finally confronting Imperiex.

Doomsday's short freedom was quickly halted by Steel in the Entropy Aegis, an armor with incredible power that had been built out of the remains of an Imperiex probe.

[16][17] Doomsday, exhibiting an increased, broadened power set which seemed to adapt to each of his opponents, attacked, defeated and abducted Steel, the Cyborg Superman, the Eradicator, Supergirl, and Superboy, before taking them to a cloaked satellite at the former location of New Krypton.

After locating the satellite, Superman attempted to free his allies, only for them all to discover the apparently still-inert body of Doomsday, as well as three separate clones, each with a different power set.

[18] Attempting to flee from the clones with Doomsday, the Superman Family discovered that their ship was on course for Earth with the potential to trigger an extinction-level event if it were to strike.

[21] In the final battle, a weakened Superman made contact with the ship's artificial intelligence before it reached Earth's core, hoping to have the tower teleport away.

Colonel Zod faced him wearing an ancient armor of Krypton's warrior founders but their battle caused the death of thousands of Kryptonians.

Months later, the creature once again escapes the Phantom Zone to wreak havoc across the globe, changing into an even deadlier form; now, every living thing in its vicinity dies, and even physical structures crumble.

Finally realizing he has no choice, Superman kills Doomsday, slicing the monster in half and, as it disintegrates, inhaling its ash-like remains to contain them within his indestructible body.

It is revealed that Doomsday was released by the Phantom King (Xa-Du), on instigation of Brainiac; the latter orchestrated it to get rid of Superman as he prepared to assimilate the consciousnesses of all human beings in the world.

[28] While Wonder Woman takes Lois and Jon to the JLA Watchtower for safety, Superman is confused when an unknown group appears and attacks Doomsday,[29] but they are swiftly defeated.

After being killed by the Radiant and subsequently undergoing the impact of the casket on Earth, his body was sealed underground in total darkness, depriving him of solar energy and greatly slowing his resurrection.

He managed to cancel out the pure-energy Radiant by slamming into him while generating a dark counter-energy; to greatly extend his claws and develop a poison to strike Superman in flight and reel him in;[1] to breathe flames against the fire-sensitive Martian Manhunter, and apparently neutralize his defensive phase-shifting power.

[32] Doomsday's skeleton protruded through his skin in razor-sharp spurs, which provided protection to his few vital organs (brain, eyes and nervous system), and acted as claw-like weapons on his hands, elbows, and knees.

His speed and agility were vastly disproportionate to his bulky stature, and he was able to match Superman in this regard, once even managing to grab the Flash while the hero was in motion.

This was attributed to intelligence that he developed, causing him to fear the death that awaited him if he lost, but did not explain how a concussion could incapacitate his healing factor for the time he remained unconscious.

[35] During his battle with the Cyborg-Superman, the Cyborg tore through portions of Doomsday's body, which were quickly replaced with bionic parts of his own, giving itself vast technopathy.

[39] While undergoing its adolescence phase, the monster created a giant clump of its own biomass as a makeshift cocoon, which steadily built up its physiological structure to its current state by feeding on the natural wildlife around it.

[41] He'd grown so powerful in such a short amount of time that the creature could overpower the demigoddess Diana of Themyscira in a straight forward battle with ease, going so far as to break both of her arms.

This version is Joshua Walker, a human soldier who was infused with Doomsday's DNA as part of a government experiment led by Amanda Waller and codenamed All-American Boy.