MC Boo is a famous DJ in the Fungi Empire. He regularly performs for King Boo, normally with sweet raps that diss Mario. He also is a member of the Dry Bones Gang. One of his most well-known songs is "Boo Can't Touch This" which he wrote when he was still alive. He also has created many other songs, such as "Non-toxic", "Backbreak", and "Bleah!". He is known to diss Luigi, Yoshi, Birdo's Boogers, Bowser, Peach, Toad, and Bob the Builder. He especially torments Barney.