Creation of the Nemetrix Arc

Plot
Malware Reborn

The Omnitrix was malfunctioning, and Ben turned into a different alien every week. Grandpa Max took him and Gwen to Galvan Prime to ask Azmuth for help. Azmuth and Albedo where working on a helix to cure a corrupted Mechamorph, Malware. Azmuth eventually fixed the Omnitrix. Max told Ben and Gwen to wait outside Azmuth's lab. Suddenly, Malware came to the planet and attacked the city. Ben used Four Arms and Feedback? to stop him, but he made it to Azmuth. The helix was not yet complete, so Malware captured Albedo to finish it. Ben (as Heatblast), Max, and Azmuth tried to stop him, but Albedo finished the helix on Galvan B. Malware's life code was rewritten, and he thought he was superior compared to other Mechamorphs. Ben used Cannonbolt and Diamondhead to stop Malware, which he did by trapping him in diamonds.

Return of Malware

Sometime after his life code was rewritten, Malware somehow escaped the diamonds. He attacked Ben (who was? Four Arms) in the forest. He gained a corrupted blueprint of the Omnitrix. Ben then used Feedback to defeat him. Malware then went to Dr. Psychobos, who created the Nemetrix using Malware's blueprint.

Predator DNA

Malware and Psychobos contacted the galaxy's greatest huntsman: Khyber. Khyber went to various worlds to collect the DNA of the predatory species of Ben's alien heroes. He hunted down many ferocious species, such as Crabdozer, Buglizard, and Slamworm. Psychobos uploaded their DNA onto the Nemetrix. But they still needed someone to test it.

The Test

They used Phil as their test subject. He, as Terroranchula, attacked Ben, Gwen, and Max. Ben used Feedback, but eventually Phil was driven insane by the Terroranchula's feral nature. With the test cleary being a failure, Malware, Khyber, and Psychobos needed a test subject who could handle the species feral nature. So they chose Khyber's Dog.