I'm a big fan of this old Marvel property. It grew out of an odd adaptation of the War of the Worlds and just mutated into a crazed post-apocalyptic adventure tale. From the Wiki page-
"Co-creator Neal Adams' early ideas for Killraven involved the character being the son of a Doc Savage archetype. This conception had been reworked by the first issue, a multiple-creator goulash in which the two originators and co-plotters turned the scripting over to another writer, and in which artist co-creator Adams penciled only the first 11 pages and Howard Chaykin the remaining nine. The second issue was fully written by the debut's scripter, Gerry Conway, followed in the third by Marv Wolfman.