Davis Bloome, also known as Doomsday, is a major villain appearing on the TV series Smallville, serving as the main antagonist of the show's eighth season.
Doomsday was created on the planet Krypton through genetic engineering, by combining the DNA of the planet's strongest and most violent creatures with the DNA of Zod and Faora. After Doomsday was created, Zod and Faora attached him to the spaceship carrying Jor-El's son Kal-El; they intended for their "son" to kill Kal-El, the son of Zod's friend-turned-enemy Jor-El.
Doomsday arrived the day a meteor shower hit Smallville, Kansas, crash-landing along with Kal-El in Miller's Field. He was inside a burnt cocoon that hatched moments later, releasing genetic matter that shifted into the appearance of a young, naked, dark-haired boy. The boy witnessed Jonathan and Martha Kent take Kal-El and walk out of Miller's Field. The boy was then captured by Lionel Luthor's search team and kept at the Luthor Mansion. Lionel, believing the boy was a mysterious being known as "The Traveler," put the boy through a series of tests to see if he was indeed The Traveler. One day, the boy came across Lionel's son Lex Luthor, and the two of them became friends. As the two were playing, the boy was accidentally exposed to a chunk of kryptonite, which caused him considerable pain. Eventually, Lionel found out that he had the wrong child and that he wasn't the Traveler, so he decided to send some of his men to take the boy and abandon him in the streets of Metropolis. Saddened, alone, and angered, the boy transformed into Doomsday and killed them all.
Sometime later, after regaining his human form, the boy was adopted and named "Davis Bloome." It was also implied that Davis was raised in five foster homes between the 1990s and 2006. Bloome went to Lowell County High School and received his paramedic training at Metropolis General Hospital.