Genkaku Azuma

A squad leader of the Undertakers, Tamaki's special enforcement group which selects prisoners who could not be rehabilitated and survived a special 'correctional' program to be anti-Deadman soldiers, wielding weapons that allow them to nullify the Deadmen's Branches of Sin. He dresses like a monk (though he prefers to be called a "Hyper Monk") and wields a guitar that can split into two machine guns, fire shock waves, or just play music like a regular slide guitar. Spoiler