The title mentions a deal with the devil and features a guest appearance by a character called Colonel Mefisto Palomarez. Mefisto (or Mephisto) is a shortened form of Mephistopheles, a demon from Germanic folklore. In the Faustian legend, Mephisto was an agent of the devil sent to collect Faust's soul. In more recent times, Mephisto is sometimes conflated with or used as a stand-in for the devil, such as in Marvel Comics.