Urdnot Grunt is a genetically engineered krogan super soldier. Bred and educated in a tank, he was intended to exemplify the best traits of the krogan, and help reinvigorate his species. In the meantime, he fought alongside Commander Shepard to satisfy his natural desire for violence. In time, Grunt would be on his own. His lust for violence would become more controlled and he, himself, would become far more matured.