Pixar’s creative animation and sound effects, in particular, create the immersive fictional world that Wall-E inhabits. Since the two main robot characters can’t emote nor express themselves or use language, much of their character is defined by their distinct sound. The diegetic audio effects that are assigned to Eve & Wall-E help to set the scene and allow the viewer to feel empathy for these characters despite being machines.

Wall-E is introduced in the opening scene, where he goes about his day on Earth. Wall-E makes a lot of mechanical sounds. He is a machine, so he has motors, metallic sounds, beeps and whistles. Wall-E seems to exist in an era not that far from now. The noises that Wall-E makes sound familiar, giving the impression that his technology is not far from what it is today. The visuals and the sounds tell the story of the robot’s origins: a robotic creation that was left on Earth many years after humans disappeared. The sounds that this character makes give him life and personality. Wall-E becomes more human by allowing him to think and feel. This is made possible by the fact that Wall-E uses so many different noises and that these are paired perfectly with each of his tiny movements. He appears more real. Wall-E appears to have a life of his own because the sounds are so detailed and numerous. They immerse the viewer into the story and character. Wall-E’s thoughts and emotions are shown through his vocal sounds. Even though Wall-E rarely speaks, his emotions can be clearly seen through the computerized voice he uses. These sounds help draw attention to Wall E’s movements. They also highlight small gestures that express his emotions, such as trembling and the way his eyes move. It allows viewers to understand Wall-E better and empathize, even if there are no words or humans.

Eve is a complete contrast to Wall-E. Eve is quieter than Wall-E, and does not make the same clunky motorized sounds. Eve’s voice is futuristic and includes hums, sounds, and beeps. These characteristics highlight the fact that the robots have been created in a far-off future. Her design and sounds indicate that Wall-E was not created in the same time period as her. Her movements are quiet and humming, which is unusual for machines today. This, combined with the time change, indicates that she was created with better technology to accomplish her mission. Eve’s mechanical design limits her ability to make small movements and show emotion. As a result, she relies on sound to convey her feelings. Eve’s design doesn’t allow for as much movement and physical expression as Wall-E. She expresses her emotions through sounds that are more human. Eve has a unique way of showing emotion and character. She can laugh. Her voice inflection and more words are used to convey her feelings than Wall E. It is evident in the scene when she is trying to find plants and has no luck. She clearly gets frustrated and makes sounds like groans and shouts of frustration.

Wall-E heavily relies on sounds unique to Wall, Eve and the rest of the cast to make the robot characters seem alive and human, but they are not.