An incredible and unknown story revealed in Comic Book Creator # 11 - Feb. 2016
In Comic Book artist # 12 - march 2001, Joe Staton said
There was one thing that I wish I could see of his (speaking of Gil Kane) - if somebody knows if it exists or if it was done - it was a graphic novel (called an album then, for somebody in Europe) titled Jason Drumm. It was similar to his Blackmark, and I did rough layouts for that. It was like this big, heroic fantasy on some alien world. I did a lot of stuff for that, and I never heard if it was published, never heard if he finished the pages, or what happened with it. If it exists, I'd love to see it.