Slash (Guns N’ Roses) has announced a new horror production company called BerserkerGang. The guitarist is working on that venture with Michael Paszt, James Fler and Andrew T. Hunt of Raven Banner; Rodrigo Gudiño of Rue Morgue magazine; and producer Pasha Patriki of Hangar 18 Media. Slash told Variety the following: “I’ve always been a…