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- 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
- 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
- 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'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
- 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
- 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
- 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
- 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
- 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
- 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