The mystery is solved. But does pop-god Lucifer like the answer? The answer is a word that rhymes with "Go", "Blow" and "Pro". If you think the answer rhymes with "Cow" I applaud you for your unconventional nature. It's good to experiment. We're experimenting with being Awesome for four issues in a row. JOIN US.
List of covers and their creators:CoverName/DescriptionCreator(s)Sidebar LocationRegRegular Cover (Baal)Jamie McKelvie (a) & Matthew Wilson (c)1VarVariant Cover (Baphomet & Badb)Kevin Wada2Note: The characters portrayed on the front cover are in parentheses.
Quote on back cover:
"When you're as good as I am? This is humble." - Baal
— Description from Comic Vine community (comicvine.gamespot.com).