From Halopedia, the Halo wiki

Vertigo screenshot 1.png


Cavalier system[1]










Terceira is a planet in the Cavalier system and a human Outer Colony of the United Earth Government. The planet is orbited by a single moon, Victory. An ocean world, Terceira is home to volatile weather. Following the Human-Covenant War, Terceira was occupied by the United Rebel Front in 2552, leading to a protracted campaign until the United Nations Space Command was able to retake the planet.[1]


Topography and ecology[edit]

Terceira is a watery world with vast oceans and lush archipelago chains, often considered a blush, veritable paradise at first glance.[1] However, the planet's beauty hides the native dangers of Terceira. With volatile and extreme weather conditions year-round, the long, winding stretches of islands on Terceira are affected by tsunamis and hurricanes, wreaking havoc on local populations.[1] The swamps of Terceira are roamed by giant crocodiles.[2]



Terceira was colonized in 2440 and settled as an Outer Colony of the Unified Earth Government.[1] A number of hydroelectric platforms[3] and isolated research centers were established across the planet's oceans, providing meteorologists and scientists with vast volumes of research data on Terceira's extreme weather conditions.[1]

Post-Covenant War[edit]

In late 2552, following the end of the Human-Covenant War, the United Rebel Front violently took control of Terceira,[1] instigating revolts against the government.[4] Inner-plated Mjolnir forearms gained popularity among Spartans while suppressing them.[4]

Years later, the United Nations Space Command recovered the colony[1] following the Terceira campaign.[5] In a highly classified operation, several CIO-armored Spartans were deployed to Terceira, where they captured and transmitted information crucial to the recovery of the colony from Insurrectionist forces.[6] OCEANIC-clad Spartans were also deployed during the campaign.[7]

The United Rebel Front's scattered remnants regrouped on the hydroelectric platforms distributed across Terceira, leading to the UNSC to deploy a number of "wake siege specialists" to retake the platforms. These operators were armored in OCEANIC-class Mjolnir, specifically intended to be used in aphotic, deep-sea operations.[3] Rooting out remaining forces on the world has proven to be an effort in futility.[1]

In the 2550s, Arthoc of the Brothers of Unending Ire launched a vicious ambush on UNSC forces on Terceira that claimed the lives of three entire squads of Orbital Drop Shock Troopers.[8]


List of appearances[edit]


  1. ^ a b c d e f g h i j k Halo Encyclopedia (2022 edition), page 47
  2. ^ Halo: Legacy of Onyx, p. 186
  3. ^ a b Halo 4: The Essential Visual Guide, page 158
  4. ^ a b Halo 4, Spartan Armor - Forearms - Inner-plated description
  5. ^ Halo 4, OCEANIC-class Mjolnir description (MCC)
  6. ^ Halo 4: The Essential Visual Guide, page 148
  7. ^ Halo 4, OCEANIC-class Mjolnir description
  8. ^ Halo Infinite, High Value Target dossier, Arthoc
  9. ^ YouTube Halo 4 Champions Bundle - New Map "Vertigo" Walkthrough!