Now, they want to give back to the city that accepted their brand of clowning around.
Since their first album 'Carnival of Carnage' came out in 1992, this group that began in Oak Park, Mich. has done rap on its own terms and reportedly sold over 6.5 million records.
They own their own building with a studio, along with their own label Psycopathic Records. They produced other artists and movies, and even started a wrestling league.
And for 15 years they have been hosting fans at an summer music fest called Gathering of the Jugalos (which is what they call their loyal fans).
And now, they have another gift - a free concert.
"We wanted to say thank you to Detroit. This industry in the Motor City gave us life," says Violent J.
The benefit concert is at the Masonic Temple on February 21. The concert is sold out, but those who have tickets are asked to bring a canned good to get in. The canned goods will go to Gleaners Community Food Bank of Southeastern Michigan.