Strong messages about the dangers of over-consumption and excessive waste; the vision of Earth as a garbage-strewn wasteland (and humans as hoverchair-bound lumps who can barely walk) speaks volumes. The importance of protecting the environment -- and the consequences of inaction and greed in the face of potential environmental catastrophe -- are a cornerstone to this movie. Other themes include loyalty, friendship, courage, perseverance, teamwork, and staying positive.
Positive Role Models & Representations
Excessive consumerism is one of the movie's themes. It's personified by the Buy N Large mega-corporation, which seems to own and operate everything in WALL-E's world. It's fictional, but its brand is everywhere. Also lots of tie-ins outside the movie for WALL-E merchandise, from toys to books and more.