Killer robot #1 answer

Randy samuels-

programmer. He wrote the program code that caused the robbie CX30 robot to oscillate wildly killing the robot operator, Bart Mathews.

Cinday yardley-

silicon techtronics employee and software tester she admitted to faking software tests in order to save the jobs of her co-workers.

Ray johnson-

robotics division chief at silicon techtronics. he was drive by the divisions need for a successful robot.

...I think the 3 of them are the responsible to the death of bart mathews...