(equivalent of Lucifer/Satan) but considerably different in detail from the Christian account. Demons In the Doom series demons from Hell have come into the universe through an inter-dimensional portal which is located on Mars. In Princess of Wands by John Ringo, a Christian housewife and soccer mom gets involved in an organization which co-operates with the FBI in dealing with demons. In That Hideous Strength by C. S. Lewis, the villains of the story are guided by beings they call "macrobes" which are clearly meant to be demons. In Warhammer 40,000 series, some of the villains of the story appear to be demons, beings of immense power and strength. They can be summoned by certain groups of people with arcane knowledge. They are known as daemons, and the people who hunt them, daemon hunters. Devil The television series Futurama features a recurring character called the Robot Devil. In the 1975 Doctor Who episode "Pyramids of Mars", the Doctor states that Satan is one of the names the last of the Osirians, Sutekh (who considers all life his enemy), is known by. In the 1978 television series Battlestar Galactica, the two-part episode "War of the Gods" features a character very much like the Devil who is portrayed by Patrick Macnee. His name is Count Iblis — Iblis being the Islamic name of the Devil. The 2006 Doctor Who episodes "The Impossible Planet" and "The Satan Pit" feature an ancient being known as the Beast, which claims to be the basis of the Devil figure in all religions and mythologies; earlier in "The Dæmons", it is shown a race resembling the typical image of the Devil had visited Earth and become the basis for both Gods and Demons. In Perelandra by C. S. Lewis, the protagonist must fight against a man possessed by a demon, hinted to be the devil himself. Ubik (1969) by Philip K. Dick — In the novel, companies uses a form of cryonic suspension to preserve the deceased in a state of "half-life" which allows for limited consciousness and the ability to communicate. The recently deceased protagonist Joe Chip finds the "reality" of the half-life world around him decaying and temporally regressing and discovers that Jory Miller, another half-lifer, is the cause of this; Jory devours the life force of others in half-life in order to prolong his own existence. Ella, who has been in "half-life" for many