Lifeworker

Lifeworkers were the third-highest rate in Forerunner society. They specialized in all living things and medicine, including experimenting with new forms of life. The highest possible rank achievable by a Lifeworker was Lifeshaper. Earth, then called "Erde-Tyrene", was at one point an experimental planet under the care of the Librarian, a Lifeshaper and one of the most powerful Lifeworkers to have ever lived. Lifeworker forms were typically graceful and tall compared to other rates.

The Lifeworkers, under the Librarian's control, were responsible for maintaining the ecosystems on Installation 00 and the Halo Array using them to research, store and index species collected from numerous worlds across the galaxy.

Known Lifeworkers

 * The Librarian
 * Calyx

List of appearances

 * Halo: Combat Evolved Anniversary
 * Terminals
 * The Forerunner Saga
 * Halo: Cryptum