D.I.J.'s diary describes several key events in the game, as witnessed by this mysterious character. If the player pay close attention during these events, it becomes apparent that D.I.J. is actually a rodent. The most obvious evidence of this is when Claire opens up a locker at the Antarctica Facility and it jumps out. Claire and this event are described in detail in the diary. D.I.J. witnessed the following: After all this, D.I.J. escaped the base, leaving "a world of death... and into a world where desire and power ruled."