Batman / Grendel #1 (1996 DC/Dark Horse)

The Dark Knight has faced many twisted nightmares: killer clowns and crazed ex-D.A.s, women dressed as cats and steroid-pumped madmen. But an unholy relic — the bones of Hunter Rose — has brought a deadlier foe to his city. A relentless, merciless foe. A foe known as Grendel-Prime. The devil has returned to Gotham.