Grunts were the first level of warrior in the service of orc armies during the First War. Trained for close combat, these soldiers make excellent fodder for wading through human forces. Use of the ax and shield is their speciality, and they are hearty fighters with a taste for blood. ( )
Grunts are the first and last line of the horde's defense. These powerful fighters arm themselves with mighty battle-axes and display all of the savagery and cunning of their race. In past generations, grunts were characterized by their depravity and brutality. But now, under the visionary leadership of Thrall, they more closely resemble their savage, yet noble warrior ancestors. ( )
In the WarCraft RTSs, the Grunt was the main Orcish fighter. In Warcraft I and II, they are equal to footmen, but in Warcraft III they are stronger than footmen but cost more food and resources.
In World of Warcraft
Grunts are guards in horde cities such as Orgrimmar
Grunts are used as the pawn in the Karazhan chess event.