B.P.R.D. The Warning #4 (2008) BPRD Mignola Dark Horse comic book. Mike Mignola (W/Cover), John Arcudi (W), Guy Davis (A), Dave Stewart (C), and Kevin Nowlan (Cover Inks). Liz remains missing as the rest of the Bureau faces off against giant robots on the streets of Munich. Written by Mike Mignola and John Arcudi and drawn by Guy Davis, this series immediately follows the events of B.P.R.D.: Killing Ground. Kevin Nowlan joins Mignola on cover duties.