Collects Grendel War Child (1992) #1-10.
The Grendel-Khan, Orion Assante, is dead, leaving his only son as heir, a political pawn for the Khan's widow. The passing of the Khan, the military ruler of the earth, left the world warrior society in fragments, the once-controlled planet shattered into rival clans and apocalyptic zombies. But the Khan left a paladin behind to protect his only son from political ping-pong, a half-man, half-machine weapon of ultimate destruction: Grendel-Prime! Upon kidnapping the rightful heir from his mother's "protection," Prime begins a high-speed chase, ending the lives of many and ultimately deciding the fate of the tattered world.