There are multiple artists with this name:
1) Grunt was formed in Finland in spring 1993 to create hard audio filth. After nearly 20 years of activity, it is still going strong. Various styles of noise electronics is always hammered with such pressure, it usually transforms into known grunt-noise, even if new methods are used. Grunt is also known from using strong visuals and lyrics in many of the releases. They represent various moods and approaches and different kinds of topics.

Read more about Grunt on Last.fm.