This article contains spoilers for Halo episode 4.
The Halo TV series finally gives a reason for the Sacred Rings' name — a much more effective one than the games. In 2001, gamers were introduced to the world of Halo: Combat Evolved — and to the first Halo Ring. Revered by the alien Covenant as the "Sacred Rings," these ancient artifacts were created by a race known as the Forerunners millennia ago. Each Halo Ring is designed to sterilize a portion of the galaxy, a desperate attempt to defeat a parasitic race known as the Flood.
The first season of Paramount+'s Halo TV series is clearly serving as something of an extended introduction to the show. It's mainly focused on character-building and world-building, while the narrative gradually builds towards the discovery of the first Halo Ring. Episode 1 saw John-117, the Master Chief, discover a Forerunner artifact known as the Keystone, that seems to be designed to point towards a Halo Ring. In Halo episode 4, scientist Miranda Keyes — daughter of the UNSC's most controversial scientist, Dr. Catherine Halsey — managed to translate the Covenant's comments about images generated by the Keystone when the Master Chief touched it.
Related: Why Is Halo's UNSC So Much Darker & Brutal In The TV Show?
The scene also finally explained why these are known as "Halo" Rings. The holographic image Keyes studied showed the artifact projecting the Ring at its center, with the Ring surrounding it like a halo. It makes sense that humanity would lack an equivalent word for the Covenant's descriptor of the "Sacred Ring," because there's nothing in recorded human experience to correspond with the Halo Rings.
In truth, this is a better justification than the Halo games themselves, where the Halo
Read more on screenrant.com