The Avengers Robot design is designed to look similar to the Iron Man concept.  The design is targeted towards people who are interested in robots or particularly with the Avengers. The colors that are chosen are Iron Man color themes in order to resemble the character. By doing so, people can relate to the Iron Man theme when they look at the robot design. The additional parts in the design is the blue circle in the middle of the chest, which also relates to the Iron Man theme.