Negadroid

A mechanical being built in the far future for an unknown purpose, it runs on negative emotions, fear, anger, hatred etc. Its entire purpose is to survive, to which end it causes as much pain and suffering as possible, subjugating millions in its own time until a consortium of scientists and heroes opened up a warp gate and pushed the Negadroid through, hoping it would be sucked into a different dimension. It wasn't, instead being drawn back in time to the present day. It has fought many battles against Earths heroes, most notably The Protectors, Justice Guard and The Angels.