Date of birth:
160 centimetres (5 ft 3 in)
|Political and military information|
 Physical description
Lucy is described as being tiny and almost miniature to her fellow Spartans. By age 12, after Operation: TORPEDO, she was only 5.2 feet tall  and 70 kilograms, which is small even by non-Spartan standards. She also has pale skin from being inside her Semi-Powered Infiltration armor for long periods of time.
 Childhood and training
In her childhood, Lucy's family had a pet cat. She would also later recall a faint memory of a horse. She was orphaned at age six in 2539 when the Covenant glassed her homeworld and murdered her family. Lucy, distraught, volunteered for the Spartan-III Program to get revenge on the Covenant aliens. She was trained by Lieutenant Commander Kurt-051 Ambrose and Senior Chief Petty Officer Franklin Mendez at Camp Currahee on Onyx for six years. Lucy, along with Tom-B292; Adam-B004 and Min-B174, became "Team Foxtrot," one of the organized SPARTAN-III combat teams in Beta Company.
 Operation: TORPEDO
- Main article: Operation: TORPEDO
- "How are you sure we're alive?"
- —Lucy's last words to Tom
In 2545, Lucy and the rest of Beta Company were sent on Operation: TORPEDO to destroy a Covenant refinery on Pegasi Delta. The majority of the company was killed before reaching the refinery, but Team Foxtrot managed to get to the refinery's reactor core. They destroyed the reactor core, and only Lucy and Tom managed to survive by jumping into the ocean nearby, sparing them from the immense heat.
Although the mission ended up as a 'success', only Lucy and Tom survived the battle. Adam and Min never made it, killed by the Covenant and reactor, respectively. Lucy, traumatized by the incident, was diagnosed with post-traumatic vocal disarticulation, rendering her unable to speak. According to doctors, she was physically capable of speaking, but over time, it became became harder and harder for her to express her traumatic experiences, and she felt that "her head was full of things that nobody else would understand or want to hear", so she would stay silent. After years of silence, she found that she had thoroughly forgotten how to speak even when she wanted to. Although she would not communicate in any way other than occasionally writing basic information such as map coordinates, Tom-B292 was easily able to understand her.
Because of her inability to speak, she was to be classified as "unfit for duty," and reassigned to ONI's psych branch for "psychological evaluation". Kurt-051 rescued her from this fate, along with Tom. Together with Tom, Lucy, and Chief Mendez, Kurt was able to train a third generation of SPARTAN-IIIs, Gamma Company. Lucy, along with Tom, stayed at Camp Currahee and helped in the training until 2552.
 Battle of Onyx
- Main article: Battle of Onyx
When the Battle of Onyx broke out in late October 2552, Lucy fought valiantly alongside her brothers and sisters. When the Spartans made a last stand against a massive Covenant army at the entrance to the shield world, Lucy was ordered to retreat into its safety by Kurt. At first, she and Tom were adamant not to leave their mentor behind, but Kurt knocked Tom unconscious and managed to convince a reluctant Lucy into entering the slipspace rift. She and Tom were the last to go through, before Kurt detonated two FENRIS nuclear warheads, denying the Covenant access to the shield world.
 Inside the Sharpened Shield
Several hours after their entry into the shield world, Lucy was part of the recon team consisting of Fred-104, Linda-058, Mark and Ash-G099. Along the way to the Forerunner structure her team was able to find food of some kind. The teams regrouped at a pair of Forerunner structures, after Dr. Halsey found the entrance to one of the structures, Lucy was the first inside. She spotted something moving down a corridor and chased after it. When she entered a dark room Tom and Chief Mendez told her to stop and wait for the rest of the team. In this room she started to get flashbacks of Operation: TORPEDO and started to panic, only to be calmed down by Tom.
Anxious to find what she was chasing after she continued on looking and got separated from the rest of the team, by falling into another room which appeared to be a hangar of some kind. In here she discovered what she had noticed earlier, a Huragok, which she accidentally killed. Three other Huragok were present, and started to mourn the loss of one of their own. In order to get them to help her, she showed them her helmet, one of them took interest in the helmet and started disassembling and reassembling it. Once it gave her the helmet back she noticed two Forerunner symbols on her HUD, one of which either modified the audio channels or the physical acoustics of the helmet. When she tried to activate the second, nothing happened, she later assumed it had to do with the helmet's microphone. After several attempts at contact the Huragok had it follow her and the others.
The Huragok led her into another room, where Lucy and the Engineers managed to communicate with each other using a data terminal. Here, Lucy discovered that the Huragok had access to communications with the outside of the sphere and thus might be able to help the human survivors escape. They also revealed that the passage of time inside the slipspace bubble the sphere occupied was different from that in normal space, and that the utility area Lucy had fallen into was located within another slipspace pocket where time passed considerably faster than in the rest of the sphere.
The Huragok then led Lucy to the other human survivors, who were relieved to see her, as she had been gone for days in their time. Dr. Halsey immediately began questioning Prone to Drift, becoming increasingly agitated as the Huragok failed to provide her answers or allow them to establish contact with the outside, in accordance with their instructions. When Halsey began threatening the creature, Lucy had a sudden emotional outburst; she attacked Halsey, repeatedly screaming "No!", overcoming her post-traumatic vocal disarticulation. However, it would take some time for her to fully regain her ability to speak.
Soon after, the humans managed to convince the Huragok to open communications to the ONI ships outside the slipspace bubble. Lucy, along with the other survivors were then taken aboard the UNSC Port Stanley by the ONI team Kilo-Five, and would be transported to Earth for a debriefing in HIGHCOM Facility Bravo-6. Lucy and the other remaining SPARTAN-IIIs were later offered the chance to integrate into the SPARTAN-IV Program under the leadership of the surviving SPARTAN-IIs.
 List of appearances
- ^ a b c Halo: Ghosts of Onyx, page 98
- ^ a b Halo: Ghosts of Onyx, page 15
- ^ Eric Nylund response to R1e2u3b4e5n6.
- ^ Halo: Glasslands, page 122
- ^ Halo: Glasslands, page 141
- ^ a b c Halo: Ghosts of Onyx, page 27
- ^ a b Halo: Glasslands, page 99-100
- ^ Halo: Glasslands, page 144-145
- ^ Halo: Glasslands, page 304
- ^ Halo: Ghosts of Onyx, page 368-369
- ^ Halo: Ghosts of Onyx, page 372
- ^ Halo: Glasslands, page 13
- ^ Halo: Glasslands, page 99
- ^ Halo: Glasslands, page 118
- ^ Halo: Glasslands, page 122
- ^ Halo: Glasslands, page 143
- ^ Halo: Glasslands, page 146
- ^ Halo: Glasslands, page 186-194
- ^ Halo: Glasslands, page 273-281
- ^ Halo: Glasslands, page 302-308
- ^ Halo: Glasslands, page 312-317
- ^ Halo: Glasslands, page 329, 335
- ^ Halo: Glasslands, page 336-337
- ^ Halo: Glasslands, page 401
- ^ Halo: Glasslands, page 435