B.P.R.D. The Warning #1 BPRD Mignola Dark Horse comic book. The team rushes to track down the mysterious gentleman who's been appearing in Liz's visions, as a slew of old enemies-from frog creatures, to the Black Flame, to the last remnants of Hyperborea-menace the Bureau from all sides in a catastrophic escalation to Armageddon. Written by Mike Mignola and John Arcudi and drawn by Guy Davis, this series immediately follows the events of B.P.R.D.: The Killing Ground.