Who played Sarah Connor , the Terminator 's main target , in the movie " Terminator " ?
As John begins planting hydrogen fuel cells ( similar to the ones powering the model seen in " Terminator 3 " ) , human - cyborg terminator Marcus Wright arrives to stall the Terminator , able to match its strength due to his own metal endoskeleton , but due to Marcus harbouring biological organs , the Terminator is able to incapacitate him long enough to stab John through the heart from behind , fatally wounding him .