Batman: The Ultimate Evil write about Thailand, he created a fictional country named Udon Khai which had many similarities with Thailand — though Udon Khai is described as being dominated by a lone kingpin who controls the country's one-industry economy based on sex tourism while Thailand's tourism economy, which includes sex tourism, is part of an economic development strategy enabled by international development agencies. Vachss deviated from Batman canon by having the Wayne family butler, Alfred Pennyworth, reveal to Bruce Wayne that his mother, Martha, was a sociologist who was secretly investigating a child pornography ring. In Vachss' novel, the Waynes were not the
Batman Versus Predator suspects that they are cold-blooded and vulnerable to frigid temperature. The plan works, but only lures one of the two aliens. Responding to Batman's confusion, and using Tim Drake's voice, the Predator indicates that it is now tracking Robin at a drive-in theater with friends, where he is watching old science-fiction films. Batman then ensnares the elder Predator with Mr. Freeze's absolute zero cannon. Alfred contacts Robin, who immediately accepts the truth and returns to the Batcave when he sees the creature's silhouette. The butler explains what little they know of their assailants before they are attacked. The two are