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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
- SPARTAN-II's. Catherine Halsey in Halo: The Television Series is portrayed by actress Natascha McElhone. McElhone was originally cast to play both Halsey and Cortana5 KB (445 words) - 12:58, May 19, 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- educational academy on the human colony planet of Endymion. At a young age, Catherine Halsey attended the school, where she defied the academy's educatory standards523 bytes (47 words) - 22:39, March 19, 2022
- 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
- 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
- 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
- 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
- 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