David Vincent is a singer, songwriter, businessman, and icon in the international music community. He has performed in the globally successful bands Morbid Angel and Genitorturers, and he currently tours internationally with I Am Morbid, Headcat, and his own country band.

Joel McIver is the author of thirty-four books and writes for several publications as a journalist. He is also the editor of Bass Player magazine. He has written for Rolling Stone, The Guardian, Metal Hammer, Classic Rock, and he is the occasional guest on BBC. Classic Rock magazine has called him "by some distance Britain's most prolific hard rock/metal author." He wrote the official biography of the world's biggest death metal band, Cannibal Corpse and co-wrote Megadeath's bio from bass player David Ellefson.