He and the rejects lower their heads as they mourn the "death" of WALL Picking up the plant, M-O has the reject bots and humans form a line to pass it all the way up to EVE.
E, whom EVE is trying to free from a large trash cube he is stuck in.Searching across the chamber, he detects a "foreign contaminant," finally leading him to WALL Following the tracks, M-O eventually comes across a garbage chute, which leads him into a Garbage Disposal chamber. M-O encounters those tracks, beginning a grueling process of cleaning them up. E then leaves to go after EVE, leaving dirty tracks behind.E does not understand what M-O is saying.E 100% "foreign contaminant." He then attempts to clean WALL.He then scans the robots for any "foreign contaminants" and is shocked when his detector yields WALL E teasingly wipes the dirt off one of his treads and covers M-O's face with it, he screams and franctically tries to clean his own face!) He travels around on a single roller, equipped with cleaning tools.M-O is obsessed of keeping things exempt of "Foreign Contaminant", and can do anything to complete this task (an example and running gag is when WALL He is a robot aboard the Axiom programmed to clean items deemed contaminated.
M-O ( Microbe- Obliterator) is one of the two tritagonists in WALL An example of M-O (background) when WALL-E collides with him.