A cunning and cruel robot queen; Vexus is obsessed with the enslavement of the human race. She is the main antagonist of the series. First appearing in "Hostile Makeover"; Vexus infected Jenny with a nanobt, slowly changing her from within, into "A HIDEOUS MONSTER!" Her plan is foiled when Wakeman manages to short-circuit her creation and remove the nanobot. She later showed up in "Tradeshow Showdown" where she assimilated all the robots in the convention, only for Jenny to deactivate her whole new army. Eventually, in "Designing Women", Vexus grew tired of Jenny always defeating her drones with the seemingly endless gadgets she can pull out at will. In disguise as "QT2" (as mentioned before), Vexus coaxed Sheldon out of Jenny's master blueprints (which he originally stole to find the way to her heart). Vexus nearly had Jenny beat, now able to calculate her every move, but some quick thinking outside the box left Jenny the victor in the end.