* Caulder's soul was trapped within the Core Building because of the trap Singh set on his crypt. That trapped his soul in the Magic Core in the crypt. When Richter uses that Magic Core to make his Core Library Caulder will be the Core Librarian. He'll manifest as a semitransparent entity and hate being stuck in the library until he realizes that he can enter the books. Then he'll love it and beg Richter to get trashy romance novels to go into.