Lightman/Helm (Emma Clifford) is a secondary antagonist in the 2012 fantasy adventure movie John Carter. She is a member, possibly an junior officer of the Zodangan Air force, she is a henchwoman of the main villain Sab Than (Dominic West).
Following the air battle at around mid-way through the movie, Sab Than's airship has had a mid-air collision and been racked by ground based fire. She is last seen slumped over her wheel before being casually cast aside by Sab Than as he desperately attempts to get the ship and himself away to safety.