VAQ-M also know as the vacuum bot. These are the bot that roll around the Axiom to help keep it clean. Wall-E runs into one when he visits the reject bot room.
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., M.O., Light Bot, and Steward Bot
Check the Archive for more figures:
This one is a tough one to find out in the internet. There is an occasional listing on Ebay for the set.