Mister X
According to creator Dean Motter, "The germ of the idea [for "Mister X"] goes back to my college days, in journals, in the writing that I was doing back then. I was fascinated by the ideas of sleeplessness and somnambulism." Hardboiled detective stories and silent films were also an influence, and after privately working out details of the story and premise of "Mister X" for a year, Motter turned to Paul Rivoche to illustrate the work.