King Winky is Dallas Ayers's pet pig and a part of a farm animal science experiment in which Dallas studied the nature of animals.
King Winky makes his first appearance in chapter 1, "3007," during a space marshal search warrant as they were gathering evidence against Mars and Alchemist.
As a subject of Dallas's scientific curiosity, King Winky represents the more personal and innocent side of Dallas's relationship with science — before the moral weight of his experiments grows heavier.