M-O (Microbe-Obliterator ) is a cleaning robot aboard the Axiom. M-O follows Wall-E throughout the Axiom constantly cleaning up the “contaminates” left by Wall-E.
This figure was part of a 6 static figurine set produced for the Disney Store when the movie was released in 2008. The other robots in the set are Wall-E, E.V.E., Light Bot, Vacuum Bot, and Steward Bot
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This one was a tough one to find out in the internet. There is an occasional listing on Ebay for the set.