The Iron Man series is known to feature the heroic adventures of Tony Stark, who uses his technological expertise to protect innocent lives. From this poster, the most prominent focus is the glowing heart in the middle of Stark’s outfit. From the movie, we know this central element to be the sole sustaining force for Stark to live. So, having this glowing circle in the center of the movie poster helps develop a static and fixed focus towards this power. The focus helps to parallel Stark’s knowledge and drive to save others in line with the power of the ARC reactor to sustain Tony’s life.