The backstory was shocking and insane and Killian's artwork was amazing, I loved his style. I'll never forget that one scene where the hero tells the doctor to go to hell, and he simply replies something like, “nope, already been there.”
I also remember the brilliant artwork of Dennis Beauvis for Aliens: Book Two, which was the first comic I saw when it was serialised in a magazine here in the UK. Another story of a mad military commander who thinks he has the aliens under control, which he can control like an army.