Grunt

In the original Madness Combat series, they're combatants that are members of the A.A.H.W., they're the weakest soldiers in the Agency.

In A.M.A series, they're shown as regular civilians, since in AMA 2 they are only carrying boxes to the Weapon Museum, then they get killed by Agents. Yet in AMA 3, they'll be shown as some of the Mayor's soldiers.

To view an article on the state of Grunt from Madness Combat Wikia, click here