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- life—no matter what it cost." — Catherine Halsey to John-117 regarding her changed views. Doctor Catherine Elizabeth Halsey, (Civilian Consultant 409871,327 KB (47,079 words) - 03:12, March 11, 2024
- intentions. Catherine Halsey in Halo: The Television Series is portrayed by actress Natascha McElhone. McElhone was originally cast to play both Halsey and Cortana4 KB (362 words) - 02:33, April 15, 2024
- Dr. Halsey before transferring her into the Spartans' custody. Lasky: "Dr. Halsey, thank you for coming." Dr. Halsey shows her restraints. Halsey: "I'm8 KB (1,349 words) - 19:33, September 15, 2022
- Dr. Halsey's personal journal (section Halsey)Dr. Halsey's personal journal was a journal detailing the thoughts and discoveries of Doctor Catherine Halsey over a period of 42 years, between August15 KB (1,944 words) - 17:36, April 10, 2023
- The Search for Halsey is the first chapter of Spartan Ops' ninth episode, Key. In the wake of Doctor Catherine Halsey's abduction by Jul 'Mdama, all Spartan10 KB (1,297 words) - 20:24, September 15, 2022
- universe through Dr. Catherine Halsey's computer and find exclusive material and content." — Official site summary Dr. Catherine Halsey's Computer is a marketing61 KB (6,586 words) - 01:51, March 5, 2024
- full armor. Kat with her helmet off. Catherine-B320 in combat. Kat and Carter are debriefed by Catherine Halsey. Halsey demands that Kat return the data module22 KB (2,609 words) - 09:32, February 12, 2024
- chamber. Keyes joins Halsey on the bridge of the Han. Halsey and Keyes sit at the Han's controls. Han as drawn by Catherine Halsey The bridge of the Han3 KB (317 words) - 12:11, March 19, 2023
- September 14 Dr. Catherine Halsey prepares the Spartan-II program Candidate record on Carris-137. September 15 Dr. Catherine Halsey records in her journal7 KB (860 words) - 18:27, February 5, 2024
- Miranda Keyes (redirect from Miranda Halsey)Keyes, born Miranda Halsey (service number 15972-19891-MK), was the daughter of the late Captain Jacob Keyes and Doctor Catherine Halsey. Miranda quickly31 KB (3,899 words) - 04:42, March 9, 2024
- Catherine Halsey: "Zealots? You're certain?" Jorge-052: "Their armor configuration matched." SPARTAN-B312: "Shield strength, too." — Catherine Halsey,4 KB (290 words) - 16:26, June 8, 2023
- Déjà (section Halsey's aide)"dumb" artificial intelligence who acted as a personnal assistant to Dr. Catherine Halsey and as one of the primary instructors for the candidates of the SPARTAN-II7 KB (878 words) - 17:58, March 30, 2023
- personally witnessed her killed in the Battle of Miridem." — Doctor Catherine Halsey The Battle of Miridem was an engagement of the Human-Covenant War between7 KB (770 words) - 16:37, September 12, 2023
- vicinity secured Dr. Halsey comes online. She marks a point of interest inside the tower and tells Crimson to go near it. Halsey theorizes that the tower's9 KB (1,233 words) - 11:23, April 12, 2023
- was a UNSC "dumb" Artificial Intelligence construct who assisted Dr. Catherine Halsey and Jacob Keyes during their Spartan-II candidate evaluation reconissence2 KB (156 words) - 14:29, March 23, 2022
- looks up at Halsey with an expression of blank obedience. Roland: "UNSC A.I. overide instructions active, Doctor Catherine Halsey." Halsey: "Roland, tell10 KB (1,508 words) - 19:44, September 15, 2022
- end of their table. Interrogator: "Dr. Halsey?" Halsey looks at her speaker defiantly. Doctor Catherine Halsey: "You already know everything." Interrogator:8 KB (1,043 words) - 20:39, August 7, 2023
- Doctor Catherine Halsey was brought aboard where she determined that the artifact was communicating information from the ship to Requiem. As Halsey later8 KB (957 words) - 16:34, August 27, 2023
- Galileo is the second chapter of Spartan Ops' third episode, Catherine. Fireteam Crimson arrive to Galileo Base via Pelican dropship. As they land, they7 KB (906 words) - 20:08, September 15, 2022
- construct created by Dr. Catherine Halsey. Although she was initially created as a platform for experimental software, Halsey decompiled, edited, and reconstructed6 KB (749 words) - 00:52, February 15, 2024
- Doctor Catherine Halsey was brought aboard where she determined that the artifact was communicating information from the ship to Requiem. As Halsey later18 KB (2,194 words) - 10:35, September 25, 2022
- the Spartan Ops chapter? "An alien AI full of human memories." — Dr. Catherine Halsey, after discovering the artifact's true nature. The "Didact's Gift"4 KB (431 words) - 11:30, April 12, 2023
- still-classified challenge once given to Materials Group designers by Dr. Catherine Halsey. The Wilhelm helmet is available for multiplayer Spartan armor customization3 KB (227 words) - 06:32, May 8, 2024
- Catherine Halsey/Quotes (section Catherine)When Déjà tells Halsey she's arrived 14 minutes later than usual. None of that really mattered. It was just a means to an end for Dr. Halsey... a means to83 KB (13,803 words) - 15:23, April 12, 2022
- it is an AI in Halsey's possession. In 2511, Halsey mentioned that she stored notes in Jorjet. In 2513, Jorjet and Déjá gave Dr. Halsey "a refresher" on1 KB (127 words) - 21:43, November 16, 2023
- "It's so easy for them to destroy us." — Doctor Catherine Halsey, after Arcadia's fall The Second Fall of Arcadia was the loss of the human Outer Colony9 KB (943 words) - 04:01, February 6, 2024
- Shootout in Valhalla is the fourth chapter of Spartan Ops' third episode, Catherine. Picking up from the previous chapter, Spartan Jared Miller informs Commander9 KB (1,103 words) - 11:43, April 12, 2023
- a Promethean Knight. Farther down, Lasky leads Catherine Halsey to the bridge. Doctor Catherine Halsey: "Captain, the Prometheans-" Captain Thomas Lasky:10 KB (1,373 words) - 19:45, September 15, 2022
- gametype, VIP? The VIP is the first chapter of Spartan Ops' third episode, Catherine. Fireteam Crimson is sent on a mission to eliminate Parg Vol, a Sangheili8 KB (1,042 words) - 19:30, January 30, 2024
- narration from Catherine Halsey regarding the current situation within the core of Onyx. Continuing from where they left off, Catherine Halsey, Chief Mendez28 KB (2,795 words) - 09:36, March 22, 2024
- his projects often competed with Dr. Catherine Halsey's projects for funds, he had a long-standing rivalry with Halsey and her SPARTAN-IIs. He had a private14 KB (1,909 words) - 06:26, December 3, 2023
- Ackerson. As Ackerson's private AI, Araqiel was tasked to spy on Dr. Catherine Halsey and her research. His avatar was that of an elongated skull with long4 KB (575 words) - 10:53, August 10, 2023
- been wondering what your Spartans died for? They died for this." — Dr. Catherine Halsey to Carter-A259 A ship of Forerunner design was embedded within the5 KB (565 words) - 12:02, April 4, 2024
- Sheila was with Dr. Halsey on Miridem when it came under assault by Covenant forces. Acting as Halsey's bodyguard, Sheila was escorting Halsey to an extraction2 KB (205 words) - 16:10, March 19, 2022
- Jul 'Mdama's Covenant, and the Prometheans. During the battle Dr. Catherine Halsey was rescued by UNSC forces and Jul 'Mdama was assassinated. Before11 KB (970 words) - 13:59, April 30, 2024
- Hunting Trip is the fifth chapter of Spartan Ops' third episode, Catherine. Fireteam Crimson arrive to Parg Vol's location codenamed "The Gate". He is7 KB (875 words) - 19:30, January 30, 2024
- Operation: WARM BLANKET was a UNSC operation to recover Dr. Catherine Halsey from Covenant captivity following the Battle of Miridem in 2544. SPARTAN-II10 KB (1,162 words) - 14:25, February 18, 2024
- speaker of the facility. Dr. Catherine Halsey was present, and opened the door for them. She was then checked out by Dr. Halsey and sent to survey perimeter5 KB (597 words) - 04:16, February 9, 2024
- planet. It then cuts to inside the station showcasing parts being made. Catherine Halsey: "Mjolnir Exosuit is now complete." The parts are then began to be10 KB (911 words) - 11:34, March 19, 2022
- Jerrod was one of the AIs in the ownership of Dr. Catherine Halsey. On December 11, 2529, while Halsey was struggling to get access into the Kig-Yar point3 KB (383 words) - 00:25, March 20, 2022
- into a document called the "The Accra Incident". February 24 Doctor Catherine Halsey makes an entry in her personal journal in which she ponders the nature9 KB (1,038 words) - 11:54, April 6, 2024
- personality gave the key to Dr. Catherine Halsey, instructing her to take the key to the Absolute Record. After Halsey reawakened in the Covenant-controlled12 KB (1,575 words) - 05:27, February 28, 2024
- in the 26th century. May 28 Atriox is born on Doisac. August 8 Dr. Catherine Halsey makes the first entry in her journal following her enlistment in ONI's6 KB (703 words) - 18:28, February 5, 2024
- Requiem. Catherine Halsey: "Life is too short, I will never learn all that exist in our tiny galaxy let alone the rest of the universe." Fades to Halsey sitting10 KB (1,283 words) - 19:31, September 15, 2022
- Flash clones were used by Catherine Halsey to replace the kidnapped children of the SPARTAN-II program. Around the same time, Halsey flash cloned herself,14 KB (2,022 words) - 02:39, February 16, 2024
- category. 2518 was a year in the 2510s in the 26th century. February 5 Dr. Catherine Halsey reviewed Kurt-051's progress noting he was good at bonding with his2 KB (290 words) - 08:34, April 11, 2024
- Port Vernon was a coastal city on Endymion, and the birthplace of Catherine Halsey. At some point in the Human-Covenant War it was glassed with the rest866 bytes (61 words) - 18:43, February 8, 2024
- xenoarchaeologist working for the Office of Naval Intelligence. Dr. Catherine Halsey described his expertise as "invaluable" and noted that his intuitions3 KB (313 words) - 22:44, March 19, 2022
- into the most dangerous ops. Catherine Halsey - ONI's former chief scientist and mother of the SPARTAN-II Program, Dr. Halsey has recently been stripped21 KB (1,494 words) - 01:23, April 9, 2024
- size, from the size of a tablet computer to thumb-sized devices. Dr. Catherine Halsey kept a pad of information with her about the Spartan-II candidates4 KB (504 words) - 00:25, August 5, 2022