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BIONICLE Encyclopedia Volume 1 (also known as the Bionicle Encyclopedia) features all of the characters, Rahi species, places, and many more from the 2001-2005 storyline. It is written by Greg Farshtey and was released on October 1, 2005.
Note: Some of the information in this encyclopedia may be out of date or no longer considered canon.
The encyclopedia has a pronunciation guide for all of the characters, Rahi species, places, etc. and most of them also have color pictures and also all of the information are listed in an alphabetical order.
- An exclusive short story, Birth of a Dark Hunter which was about Nidhiki's past as a Toa and his betrayal to the Toa Mangai and the rest of Metru Nui.
- A sheet of BIONICLE stickers at the back of the encyclopedia.
An updated version of this encyclopedia was later released as BIONICLE: Encyclopedia Updated