Serina

Serina was a UNSC "Smart" AI that was assigned to the, a modified Phoenix-class colony ship.

Description
On board the Spirit of Fire, Serina acts as a military advisory AI, which may or may not be her only function. Her avatar is a young woman with long hair. She speaks with a distinct British accent.

Serina 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 was slowly being pulled inside the Shield World - almost always responding to their peril with some curious remark or dark joke. Although prone to sarcastic comments and exhibiting a seemingly uncaring attitude, she is more compassionate than she seems.

She also appears to have a fascination with human relationships. Knowing the crew of the Spirit of Fire may be on a one-way trip, Serina manufactured and delivered fake emails from family members to the crew celebrating Valentine's Day. No one ever suspected her of this deception.

As the Spirit of Fire was too far away from UNSC territory and traveling without a Shaw-Fujikawa Translight Engine, it is unlikely that Serina was deleted.

Trivia

 * Serina seems to have a theoretical interest in chocolate.
 * "Spinning up FTL drive" may be a reference to the re-imagined Battlestar Galactica, which uses this phrase frequently when the Fleet jumps.
 * She was voiced by Courtenay Taylor.
 * Her name "Serina" means "Serene", or "Calm".
 * Serina's only human memory is "kissing a boy".
 * After completing the game on Legendary, Serina will say "Captain, wake up; something has happened." After that, she will repeat that quote if the last level is completed.

List of appearances

 * Halo Wars
 * Halo Wars: Genesis