Sergio Aragones Groo - Fray of the Gods (2017)

The gods did not bless Groo with brains, only with the ability to battle. Now, they themselves are in conflict over the spirit and future of mankind . . . and it is Groo who becomes the pawn (unwitting, of course) in their war. If the future of humanity depends on the Wanderer, we're all in a lot of trouble. Collects the four-issue miniseries.