Bestiarum
From Halopedia, the Halo wiki
The Beastarum is apparently on a disk that comes with the Legendary edition and Collectors edition of Halo 3. This disk will have models and such of the entities of the Halo Universe. Not much is known about it yet, as it has not been released yet, but supposedly it will have 3D renderings of almost all things Halo 3 related.
