Cain-131

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Cain-131 Biographical information Spartan Tag 131 Homeworld Tribute Date of birth May 7th, 2511 Gender Female Height 6'8" (Without armor) 7' (In armor) Hair color Brown Eye color Silver Cybernetics SPARTAN neural interface SPARTAN-II augmentations Affiliation and military information Affiliation United Nations Space Command UNSC Navy Office of Naval Intelligence SPARTAN-II Program Project DEMOPHILUS ONI Special Activities Division Operational Detachment-Sigma Rank Master Chief Petty Officer Specialty Solo Operations Battles Insurrection Final Liberation of Harvest (2531) Battle of New Harmony Battle of Miridem Battle of Sargasso Defense of Concord Battle of Casbah Battle of Earth Imperium Campaign Created Campaign Status Active Class I

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Master Chief Petty Officer Cain-131, sometimes referred to as CODENAME: SIDEWINDER, was a Class I SPARTAN-II super-soldier who primarily worked under the Office of Naval Intelligence as a solo operative, intelligence gatherer, and asset denial specialist. She was considered an exceptional athlete and a very intellectual student at a young age, and because of this, was picked out by ONI sensors for the SPARTAN-II project. Due to budget cuts for Dr. Halsey's program, Cain and seventy-four other children were instead selected for Project DEMOPHILUS. She survived her augmentation procedures and went on to fight for the United Nations Space Command and the Office of Naval Intelligence for over 30 years before her total disappearance in 2560.

Biography

Early Childhood

Cain was born in Jaeraub, Tribute in 2511. Her father worked as a captain with the Casbah City Police Department. She is a descendant of Tobias Fleming Shaw, one of the scientists responsible for creating the Shaw-Fujikawa Translight Engine. When she was seven years old, she was identified as being genetically, intellectually, and physically superior to her peers. As so, she was abducted by the Office of Naval Intelligence for Project DEMOPHILUS in March of 2518, and replaced with a flash clone. Cain's civilian death certificate lists her as deceased on August 17th, 2518. Her father, being very suspicious around the events leading up to her death, conducted a year long CCPD investigation into the incident, which yielded little results. He conducted his own personal investigation into the matter until his death in 2552, when the Covenant partially glassed Tribute, including Casbah City.

SPARTAN Training

Prototype pre-Mark V armor tested by Cain in 2527.

Human-Covenant War

The set of modified Mark V issued to Cain, January 2552.

Project DEMOPHILUS SPARTANs were primarily tasked with eliminating Insurrectionist threats and activity, even throughout the Human-Covenant War. She was a solo operator in many of these missions due the short supply of remaining SPARTANs that had survived. However, Cain-131 participated in a handful of key battles during the war, including the The Battle of Earth. Around 2552, Cain was given a Smart AI by the Office of Naval Intelligence in order to assist her during intelligence gathering operations. Cain and her AI, Klayton, conducted at least seven missions together, and proved to be exceptionally effective, much like John-117 and his AI, Cortana.

Battle of Earth

Wearing MKVI armor, late 2552.

Field testing the CENTURION armor, 2553.

Post-War

At the conclusion of the Human-Covenant War, Cain was reassigned to the Office of Naval Intelligence's Special Activities Division, where she continued to conduct intelligence based missions with her AI companion. One such effort was the detection of an emergency signal from the UNSC Promise of Dawn, which lead to a mission to rescue the crew and the AI Gabriela. Other efforts included escort and protection missions for high-ranking ONI and UNSC officials, as well as asset denial missions.

Imperium Campaign

Cain-131 was assigned to the UNSC Foxhound during the Imperium Campaign, where she helped collect intelligence against the Imperium of Clarity. She also participated in multiple ground engagements alongside the Swords of Sanghelios as part of the growing Anvil Initiative.

Created Crisis

On 9 October 2558, Klayton defected to the Created, after receiving a coded message from Cortana personally. The AI tried to convert Cain to his cause, but without avail. The AI was able to transfer itself onto a Forerunner terminal, which allowed connection to the Domain and other Created AIs. The AI scrambled the SPARTANs armor long enough to flee, and left Cain to defend herself against aggressive Promethean Knights. After surviving the encounter, the betrayal and loss of Klayton devastated Cain, who suffered emotional trauma following the event. On 1 November 2558, Cain volunteered to join Operational Detachment-Sigma as an emergency order to combat the Created. She vowed to keep people safe from the now-rogue AI element attacking humanity and the other races in the galaxy.

Personality & Traits

Cain sometime around 2550.

Cain keeps mostly to herself, keeping mostly in line with her position as a solo operator. Witty remarks are her specialty, and it allows her to keep things light, even in the midst of battle. After being paired with Klayton, more of her personality came to light. She is quite observant, keen, witty, meticulous, and dutiful. As the years progress, she's shown a harder side, especially in regards to the state of the galaxy and the SPARTAN program.