Colonel Grigio is one of the main antagonists in the movie Warm Bodies.  He is Julie's father and the leader of the military and survivors of the zombie apocalypse that has occurred.  When Julie learns that her zombie friend "R" is regaining his humanity, she realizes that the other zombies can be cured, but her father won't listen.  He shoots R in the chest, but R survives and starts bleeding.  This convinces Grigio that the zombies can in face be cured and he lets R live.