1989 - 2015

David Conchada was a bright young boy from a small city in the Philipines. His excellent grades earned him a chance to study abroad where he caught the interest of Emil Hamilton who got young David an internship at STAR Labs which paid for his tuition at Metropolis University, provided he agreed to work for the giant research firm upon his graduation. David did just that, graduating among the top of his class and becoming a favored pupil of Dr. Hamilton.



While working with Dr. Hamilton in the wake of Doomsday being unleashed upon the world, David thought to use some Kryptonian technology that Superman had brought to STAR Labs from the Fortress of Solitude to find some way to defeat Doomsday. David bypassed a number of safety measures in his haste and inadvertently activated a long-dormant artificial intelligence.



The AI detected a number of corruptions in its crystallized storage system and chose to find an alternative means to store its data. It chose the nearby human researcher convincing David that it could help him find a way to solve his problem if he followed the AI's instructions precisely.



Coerced into doing the alien software's requests, David build a machine that would transfer the data into David. However, the AI forgot to mention that it would also be overwriting David's own personality in the process. Once the AI was in control, it left the matter with Doomsday for others to handle and set out to the Fortress of Solitude. By the time, David's AI-controlled body arrived using conventional means, David Conchada was believed a victim of the Doomsday attack on Metropolis.



The AI used Kryptonian coded algorithm to deactivate the Fortress' many safety measures and security systems, which allowed it to access the Fortress' medical facilities. With a slave-programmed Kelex's help, the body of David Conchada was upgraded using Kryptonian DNA, meta-gene implanting, exposure to Kryptonite, and a variety of other techniques. Though not a Kryptonian by birth, Conchada was altered to be as close to Kryptonian as possible - with even a few upgrades.



2015 - Present

By the time Kara Zor-El arrived in response to an alert of her security systems being tampered with, David Conchada was gone and in his place was a new being entirely: the Eradicator.



Having spent the last week dealing with three rampaging Kryptonian fugitives, Kara was prepared for a fight, figuring this to be another fugitive of the Phantom Zone. However, as she rushed in with heat-vision oozing eyes, the Eradicator told her to stand down as it had no intention of harming a pure-blooded Kryptonian. Kara did stand down and heard the guy out, up until she realized she was talking to a computer possessing an unwilling human host. She told the Eradicator to install itself in the Fortress' mainframe and to release David, but the Eradicator declined, saying it would be willing to do so when its mission was complete but it still had too much work to do.



The Eradicator blasted out of the Fortress to go forth on its mission, leaving Kara to scramble to restore the Fortress' protocols so she could do some research into who or what the Eradicator truly was. Once Kelex was rebooted, the robotic steward was eager to inform her that the Eradicator was originally known as the Cleric, an artificial intelligence based on the mind of Kem-Veks, a Kryptonian philosopher turned religious zealot. Kem-Veks was still a highly regarded religious scholar when his mind was programmed into an AI which was programmed on Kryptonian colonial ships to be a digital chaplain of sorts, however, the program had been disabled when Kem-Veks' AI began to decline in much the same manner as the real Kem-Veks.



When Kara devised that the Eradicator's mission might be to purge the world of impure Kryptonians, she rushed to Smallville where she arrived just in time to stop the Eradicator from ambushing Martha Kent who was watching Jon and Laura while Lois was with a still recovering Clark. When she realized she couldn't defeat the Eradicator with her fists, she used her brain. A weakened and badly injured Kara boldly stood in front of Jon and Laura.



Eradicator commanded her to move, re-iterating it did not wish to harm her but Kara replied with a smirk. "You're not the one to be giving commands," she told it before proceeding to tell him he had tipped his hand to her. Eradicator asked for her to explain and she told him she was the daughter of Alura In-Ze, a famed Kryptonian computer programmer and the inventor of the computer far more sophisticated than the Cleric. Kara explained she knew the ins and outs of ancient Kryptonian code by the time she was ten. Hacking that old code was literal child's play to her. Eradicator failed to see the significance until Kara recited a verbal command prompt and told Eradicator to change its primary purpose as a protector of the House of El, regardless of its biological distinctions.



After a few moments of attempting to resist the unusual hacking, the Cleric protocol was defeated and it had to accept its new function, kneeling before Kara as it identified Jon as Jon-El and Laura as Lara Kal-El, even forcing Eradicator to accept a slightly injured Martha as a member of the House of El as the mother of Kal-El.



While the coding could be removed from David Conchada's body, psychic scans indicated that Conchada's consciousness was beginning to find ways to bleed into the AI and with time, might merge with it completely. Removing the AI coding from the brain was likely to strip Conchada's own psyche from the body as well, so it was decided to keep the Eradicator intact. The Eradicator, as Conchada returned to Metropolis to prove he wasn't dead and resign from STAR Labs.



Following this, the Eradicator moved to Smallville where it remains to this day, living in a guest room of the Kent Family Farm under the identity of David Conchada as a farmhand. The Eradicator has become a close friend to Martha Kent, often driving her to doctor's appointments and helping with maintaining the farm, but he's particularly happy when Martha's grandkids stay on the farm. On occasion, the Eradicator will suit up to fly into battle, especially when it learns of Superman, Power Girl, Superboy, or Supergirl being critically injured.

