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Biographical information


c. 2511





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"Today, humanity feels pale and thin with only ghosts to defend her heart. I feel much the same."
— Cassandra laments the potential doom of humanity in late 2552.

Cassandra-075 is[3] a SPARTAN-II supersoldier who was severely crippled by the augmentation procedures.[1][4][note 1]


Cassandra was a genetically, intellectually, and physically gifted child chosen for the SPARTAN-II project. She was abducted by the Office of Naval Intelligence and replaced with a flash clone when she was around six years old. She and seventy-four other children were taken to Reach in the Epsilon Eridani system. There, she was trained by the "dumb" AI, Déjà and Chief Petty Officer Franklin Mendez, with the two serving as the Spartans' teacher and drill instructor, respectively.

In 2519, she was taken alongside her fellow trainees to a Military Wilderness Training Preserve for a mission that required each trainee to be left alone in the woods with a only a single piece of a map. It was up to them to find one another so that they could piece the map together and locate the designated extraction point. The mission was ultimately a success. At another point during training, Cassandra and the others traveled to Emerald Cove for an underwater mission. There, they abandoned Mendez and lived on their own on an island for a few days. By July 14, 2523, Cassandra and her fellow Spartan-IIs had begun facing the formidable and ruthless UNSC Marine Corps' Tango Company in simulated war games.

On March 9, 2525, Cassandra and the rest of the Spartan-II candidates underwent their augmentation procedures at Medical Facility Endurance orbiting Reach. Cassandra was significantly crippled during the surgeries and she could not continue her military career as a SPARTAN-II. She attended a military funeral aboard the carrier, the UNSC Atlas, in the Lambda Serpentis system for the Spartans who died during the process. Mendez noted to John-117 that though Cassandra and others could no longer fight, their sharp minds could still be used by the UNSC Navy or ONI in particular to plan missions, analyze data, or troubleshoot operations.[5]

In 2552, Cassandra was residing at the UNSC's M2SL Recovery Station. Following the Fall of Reach and the subsequent discovery and destruction of a Halo ring, Installation 04, she reached out to John-117, survivor of both. She expressed relief at the fact that he was still alive and informed him that her recovery was still ongoing. She would soon be proceeding to the fourth stage of her rehabilitation. This step in the process would be more painful than prior ones, but she noted that at the very least she was grateful to be covered in skin once more. In her message, she also commented on John's imminent acquisition of the Mark VI platform of MJOLNIR Powered Assault Armor and her reticence to see further Covenant technology used in humans' own. She told John that she and others missed him and that she had asked Sergeant Major Avery Johnson to let her know if the Chief was ever near M2SL. She closed on a sad note, given the current state of the galaxy and the loss of so many that had been family to she and John, and promised to contact him again in the future.

List of appearances[edit]


  1. ^ Regarding the source that has been paired with this footnote: though Bungie does not explicitly state that Cassandra is an ex-Spartan, their response, when asked about the matter, very strongly implies that she indeed was a Spartan.


  1. ^ a b c d Conversations from the Universe, "Letter to the Master Chief"
  2. ^ Halo Encyclopedia, page 83
  3. ^ Bungie Weekly Update 02/03/06
    UNSCDF asks,
    In the LE Booklet it speeks of a female named "Cassandra" is she a Spartan or not?
    A better question would be, "was" she a Spartan?
  4. ^ Scanned
  5. ^ Halo: The Fall of Reach, page 61