Hank Shermann (real name René Krolmark) is a Danish heavy metal guitarist. He began playing guitar in 1977.Shermann is best known for his work with Mercyful Fate. He has also played with the groups Brats, Fate, Zoser Mez, Gutrix, Virus 7, and his last main focus, Force Of Evil. He is a regular guest on Witchery albums.His latest band Demonica, a thrash metal act, signed to Massacre Records in October 2009. He toured with Volbeat on their summer 2012 North American tour.