Gaunter O'Dimm's true identity remains a mystery throughout most of the game, with Geralt becoming increasingly suspicious of the true nature of this "man", who demonstrates the ability to steal souls, grant wishes, see things for their true nature, and manipulate time itself. O'Dimm refuses to reveal his true name to Geralt, warning that those who learned it suffered a terrible fate. Through talking to people Geralt learns that O'Dimm will happily make a deal, either written or oral, with anyone who asks. The catch is that the deal is filled with conditions and wordplay loopholes through which O'Dimm can claim payment, apparently often Faustian in nature. The clearest example of this trickery is shown with one Professor Premethine Shakeslock: O'Dimm granted him physical protection but forced him to remain within a spell diagram, caused mental damage with dreams and visions, finishing with setting a trap to kill Shakeslock should he ever leave it.