X-O MANOWAR Will Be Unleashed This Fall! Sheldon Wiebe January 24, 2019 Comic Books Valiant’s X-O MANOWAR is about to be unleashed in a new title coming this fall. Check out the teaser poster below. X-O MANOWAR Unleashed – Teaser image by artist Doug Braithwaite and colorist Diego Rodriguez/Courtesy of Valiant Entertainment.