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Service information

Began service

January 7, 2530

Ended service


Physical information


Female programming


Young tall slender female, with long black hair.

Normal color


Historical information


United Nations Space Command

Primary function

UNSC Spirit of Fire AI Construct

Notable battles

[Source]   [Talk]

Serina, serial number SNA 1292-4, was an AI construct assigned to the UNSC Spirit of Fire, a modified Phoenix-class colony ship.


Serina was as a military advisory smart AI.[1][2] Her avatar is a young female with long hair and a lab coat. She speaks with an English accent. Beneath all her sarcastic comments and seemingly uncaring attitude, she turns out to be kinder than she seems.[3]


  • "Recalling surface squads so we can all die together. Aye, sir!"[4]
  • "Well, this is new...and scary." (Upon seeing the Flood)[1]
  • "The MAC is online and primed. Payback time!"[1]
  • "Expecting trouble, Captain?"
  • "Standard orbit achieved, all systems normal."
  • "So...nothing too difficult, then?"
  • "Here are some reinforcements, play nice."
  • "So...we left a note saying we're leaving, right?"
  • "Well, it'll be pretty obvious if he succeeds."
  • "Aye sir. Crazy mystery trip to Arcadia plotted in, spinning up FTL drive."
  • "Threading a needle while accelerating around an exploding star inside a planet that's falling apart? Sure, why not?"
  • " I the only one freaked out by the fact that we're inside the planet?"
  • "Closing your eyes might help, too."
  • "Captain, wake up. Something has happened."


  • Serina has an interest in human relationships and chocolate.[5]
  • Serina, knowing the crew of the Spirit of Fire may be on a one-way trip, manufactured and delivered fake emails from family members to the crew celebrating Valentine's Day. No one ever suspected her of this deception.[6]
  • She has a very sarcastic and detached nature. She frequently seems to disregard the lives of others, even her own ship's crew - such as when the Spirit of Fire is slowly being pulled inside the Shield World - almost always responding to their peril with some curious remark or dark joke.
  • She was voiced by Courtenay Taylor.
  • Serina's only human memory is "kissing a boy."
  • After completing the game on Legendary, Serina will say, "Captain, wake up; something has happened."




  1. 1.0 1.1 1.2
  2. Halo Wars: Genesis: "Spirit's 'smart' AI, Serina, can coordinate the simultaneous repair and refit of 12 ships of the line. We couldn't get along without her."
  3. Halo Wars Timeline
  4. - Halo Wars Cinematic Part 2
  5. Halo Wars Manual
  6. Halo Wars: Halo Timeline
Known UNSC AIs
AineAraquielAuntie DotBlack BoxBeowulfCaptain TeachChaunceyCortanaDeep Winter
DopplerDurgaDéjàEndless SummerEternal SpringFitzGibbonIonaJerrodJulianaKalmiya
LacklusterLokiLoreleiLysitheaMackMamaMelissaMo YePallas AthenaPhoenix
OrlinRebeccaRolandSekmetSerinaSifSolipsilSuperintendent (Vergil) • ToranWatchmakerWellsley

Start a Discussion Discussions about Serina

  • serina

    3 messages
    • Wouldn't she have gone to the metastability stage by now then? 
    • She might of been able to control her rampancy and only cared about the wellbeing of the Spirit of Fire and its crew, much like Juliana sol...
  • Serina

    3 messages
    • I honestly don't believe she says that at any point.
    • in the booklet most like. not sure though

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