Combine Grunt

The Combine Grunt (also known as Echo One in Combine terminology) is one of the four Overwatch units that are apart of an Overwatch branch that are tasked with all operations relating to The Vault, stationed in the Quarantine Zone and subsequently deployed throughout City 17 during the events of Wall-e the human touch 2. They are, however, a lower-ranked soldier class among the other Overwatch units.