Of Predators and Prey (1) (S01E09)

During a confrontation with a young Ben Tennyson, Malware came into contact with the Omnitrix symbol on Four Arms. Following their clash, he approached Dr. Psychobos, who then crafted a prototype version of the Omnitrix called the Nemetrix. Fast forward to the present, after a fierce disagreement, Ben and Rook part ways, providing Khyber the perfect opportunity to seize Ben.