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Myrmidons are Forerunners, presumably Builders. Several Myrmidons under the command of Splendid Dust of Ancient Suns guarded the Halo installations during the events of Halo: Cryptum.[1] It is also possible that these Myrmidons comprised of the Builder security units under the command of the Master Builder.


  • In the real world, the Myrmidons were a legendary nation of Greek people during the Greek Dark Ages, the most notable of whom was the hero, Achilles.
  • This seems to create a trend in the nomenclature of Forerunner military units, as the Prometheans are also named after a legendary figure in Greek mythology, the Titan of craftsmanship.


  1. Halo: Cryptum - Chapter Thirty