Rowdy Geirsson is the editor of Norse Mythology for Bostonians and a regular contributor to Metal Sucks, McSweeney’s, Points in Case, and Slackjaw. His writing has also appeared in the American-Scandinavian Foundation’s Scandinavian Review and the Sons of Norway’s Viking Magazine. His new book, The Scandinavian Aggressors, is an offbeat odyssey into the freezing heart of the modern Northlands that features delightful and illuminating episodes about enslaved leprechauns, beheaded mermaids, elite warrior sisterhoods, deranged Swedish fishermen, craft-beer-brewing zombies, and perverted trolls.