Rooters (Alien Matrix)

The Rooters are the former Black Ops wing of the Null Void Plumbers and a splinter faction of the organization as a whole. Their main goal was the elimination of Ben Tennyson, believing that he is not worthy of the Omnitrix, and that his presence might be a threat to the universe. They were responsible for capturing Simon Masterson and experimenting on him as part of Project Omega, implanting the Omnimatrix in his brain to allow him to change into any alien at will and be used as their ultimate weapon against Tennyson.