Eivor was born in 847, dubbed a "plague year" to Rosta and Varin, two minor nobles from Norway. After being turned away from the homes of various fellow Norsefolk, Rosta's brother Ímar allowed the couple to stay at his residence, where Rosta gave birth to Eivor not long after. Eivor's birth was witnessed by her cousin, Ímar's son Bárid, whom she grew up with, until Ímar's family migrated to Dublin in Ireland some years later. Eivor's family went on to settle in Heillboer, a small settlement in northern Rygjafylke, within the territory controlled by Styrbjorn Sigvaldisson's clan. Eivor's family came to bond with Styrbjorn's, with Eivor befriending and growing up alongside Styrbjorn's son Sigurd. In 856, Eivor attended a feast organized by her father to honor Styrbjorn and pledge allegiance to the jarl. Eivor presented Styrbjorn a gifted arm ring at her parents' behest, but halfway through the celebration, the settlement was raided by Kjotve of the Wolf Clan. Eivor watched as her father put down his axe at Kjotve's insistence that his family and clan would be spared if he gave his life willingly, leading to both his and Rosta's deaths. Kjotve immediately broke said promise and ordered his men to kill the rest of the village. Eivor, however, was rescued by Sigurd, who managed to clear the immediate village area on horseback before being separated from Eivor after a tumble caused by one of Kjotve's raiders. Lastly, Styrbjorn bent the knee, giving his lands and titles to Harald to guarantee peace for his clan, angering both of his children. Sigurd argued with his father for denying his birthright to become jarl before storming off as Harald expressed his interest in Eivor and asked if she would join him. She declined by saying that her destiny was bound to Sigurd. After three weeks at sea, in January of 873, Eivor and her clan arrived in the southern part of Britain. Eivor and Sigurd's longship went on ahead of the other to clear the way leading into the land.

Cassandra Carlton "Cassie" Cage is a former sergeant and commander of the Special Forces, Cassie is the daughter of Johnny Cage and Sonya Blade in the second timeline. She, alongside Takeda, Kung Jin, and Jacqui Briggs, is known collectively as the Kombat Kids. Sometime after the Netherrealm War, Johnny Cage and Sonya Blade got married and had a daughter, Cassie. However, Sonya's perceived prioritization of work over her own family led them to divorce, much to Cassie's sadness. Being the daughter of a high-earning Hollywood actor, Cassie was somewhat spoiled, although her attitude changed after she was kidnapped by the Black Dragon. This experience convinced her to join the Special Forces, where she would be trained by both of her parents in combat. Inheriting the charisma and cocky wit of her father and the stern, tough as nails attitude of her mother, Cassie quickly rose through the ranks to become team leader and, eventually, sergeant. She managed to defeat the fallen Elder God Shinnok single-handedly, even in his full corrupted form, and eventually attained the rank of commander. Initially, Cassie harbored deep insecurities, fearing that she might not be able to live up to her parents' legacy and expectations, especially her mother's. But over time, Cassie developed into a more confident leader with the aid of her friends. She is a stereotypical millennial, sporting many of the most iconic trends and technologies of her generation, including iPods, social media, and digital phones.

Zora Bennett is a skilled covert operations expert. She is contracted to lead a skilled team on a top-secret mission to secure genetic material from the world's three most massive dinosaurs until her operation intersects with a civilian family. Zora was a mercenary who worked primarily worked in war-torn areas. Her and Booker were in a car in Yemen when a car bomb blew up. Booker slowly died. This memory has continued to hurt Zora because Booker was a good friend of hers. In the summer of 2027, Zora encountered Martin Krebs in New York. Whilst in traffic, Bennett was able to sneak into Krebs’ car. The two talked about an upcoming mission that Krebs and his employer Parker-Genix Pharmaceutical Engineering had recruited Bennett for. Zora mentioned that they were meant to meet at another location. Bennett also said that Krebs wasn’t hard to follow. Eventually, Zora exited the vehicle, and Krebs followed her after parking the car. They talked about a mission to Ile Saint-Hubert, a former InGen island. Krebs mentioned that the mission isn’t legal and they could face criminal prosecution. Martin said that a civilian is on the mission, although the civilian doesn’t know this yet. Krebs also mentions that Zora would be paid a high amount of money for the mission. The two then headed to a nearby museum where Dr. Henry Loomis was working. For the past six months, Dr. Loomis had been advising Parker-Genix on paleo-coronary health for developing a drug that could cure heart disease with the DNA of three selected dinosaurs. Whilst there, Krebs mentions Zora’s mother. However, Zora says she doesn’t like talking about personal issues. The next day, Zora, Henry, and Krebs travel to Suriname, South America to recruit Duncan Kincaid and arrange transportation. They meet Duncan at a bar and discuss the mission. A few hours later, the crew approaches St. Hubert to get the first of the blood samples.

Corporal Elizabeth "Lizzie" Carmine was a member of the Carmine Family and the niece of Clayton Carmine. She served in the Coalition of Ordered Governments Army and Engineering Corps during the Interwar Period and the Swarm Invasion as a Minotaur driver in the motor pool and was also a capable Gear. Elizabeth Carmine was born in New Ephyra to one of the last surviving members of the Carmine Family. She was raised in an era of peace and was brought up on stories of the heroism of her uncle, Chief Sergeant Clayton Carmine, who served as a war-hero during the Locust War. When Elizabeth became an adult, she joined the Coalition of Ordered Governments Army, following in the footsteps of her legendary Uncle Clayton. She became an experienced Gear and driver, serving in the Motor Pool of the Coalition of Ordered Governments Engineering Corps as a Minotaur driver. In her time serving as a Gear, protecting COG citizens, she rose to the rank of Corporal and became one of the best drivers in the entirety of the COG army. Either during her training or service, she met and became friends with Lt. James Dominic Fenix, son of Sgt. Marcus Fenix and First Minister Anya Stroud, who served with her uncles during the Locust War, as well as Lt. Delmont Walker. She also became familiar with Coalition Thrashball League President and former Gear, Augustus Cole. She gained admiration within the Coalition as being one of the best drivers, but also being very arrogant.

Princess Macy Halbert is a Nexo Knight and the princess of Knighton. She is also the daughter of King and Queen Halbert and a childhood friend of Clay Moorington. As a child, Macy had to train in proper royal manners and skills, which she detests. She then observes her mother training, which inspires her to be a knight. Initially unknown to her, her mother gifted a mace to Macy, much to her delight and trains herself in combat. She eventually meets Clay in the Academy, after which the young boy recognizes her as "the girl in the castle." Due to having similar personalities and passions, both got along well in their Academy days.

Miranda Halsey was born on February 28, 2525, on the planet Reach, where her mother, Doctor Catherine Elizabeth Halsey, lived and worked. Note Though Miranda occupied Catherine's every non - working thought, there were many periods during her first year of life when her mother was absent. Barely a month after giving birth, the doctor had left the Epsilon Eridani system, bound for Lambda Serpentis by March 30th. She lived with her mother on Reach until 2531 at the age of six, when she was sent to live with her father because her mother felt that she could not provide the care her daughter deserved. In the following years, she changed her last name to Keyes. She would live in an apartment at Mare Insularum on Luna, where her father taught at the Academy at Mare Nubium or Luna Officer Candidate School. Dr. Halsey attempted to dissuade Miranda from joining the UNSC military to no avail. Miranda was accepted to the Academy's pre-enlistment training at age 16, being the second youngest to ever have attended the school. In April 2550, Miranda was promoted to the rank of Lieutenant Commander in a promotion ceremony at downtown Quezon on Reach. Fleet Admiral Terrence Hood also personally awarded her the Silver Star, and it was announced that she would assume command of the Stalwart-class light frigate UNSC in Amber Clad. Immediately following the ceremony, Keyes was deployed back to active duty, having been able to postpone a mandatory leave required for those receiving high-ranking promotions. In 2552, she accepted her father's posthumous Colonial Cross on Cairo Station immediately before the Battle of Earth. At this time, she was assigned to the Medii Battle Group of the UNSC Home Fleet. By this point, she had achieved the rank of Commander at a young age.

Farah Ahmed Karim was born on January 25th, 1992 in the town of Riyzabbi, Urzikstan, to Walid Karim and Fatima Karim. Her childhood is largely unknown, but it can be assumed that she and her brother Hadir studied at an unknown school. In 1999, when Farah was 7-years-old, Russian forces were present in Urzikstan. Farah and her mother were buried by rubble from a Russian artillery strike, killing the latter. Farah managed to survive and was rescued until the Russians began advancing upon the people of Urzikstan. Farah and Hadir snuck out of their home, evading Russian troopers and attempting to escape via truck. They were then immediately captured by Roman Barkov, the Russian General responsible for invading their homeland, and were taken into his custody to be imprisoned. After being captured by the Russians, Farah and Hadir were held as prisoners of war for several years. Farah then escaped from her cell. After killing a few guards, she makes it to the main cell block, and is greeted by her sisters, Ayah, Azadeh, Darine, Ghalia and Nadia, who are extremely overjoyed and happy that she escaped, before begging her to open the door, which she does. They then grabbed AK-47's and frag grenades before escaping the main prison complex, and reaching the warehouse where Barkov took Hadir. Unfortunately they were ambushed by the Russian Forces before being saved by an SAS squad led by then-Lieutenant John Price. Afterwards, they saved Hadir and left the prison. In 2019, Farah, now in her late 20s, agreed to help CIA operations officer Alex to deal with stolen Russian gas, but only if he helped them take back their country from Barkov's men. Farah later assisted the team to destroy Barkov's gas factory and personally kill him. As Farah then said that she would kill him for her family, for Hadir, that she was Karim, and that Barkov was the only terrorist here, she then kicked him off the helicopter and killed him. She then requested Nikolai to fly them back to Urzikstan, home.

She was born with the power of invisibility. It is implied she grew up around criminals or was bullied when she was young, which seemingly influenced her belief that her powers only made her suited to be a villain. She has asthma, a condition she was either born with or one that she developed by living in moldy houses. During her criminal career, Invisigal committed assault, larceny, and robbery. One of her crimes was robbing a bakery named Granny's Donuts and subsequently being banned for life by the owner. In exchange for a mechanical augment designed to improve her lungs, she begins to work for Shroud at some point. Under the belief that it will close her debts to Shroud, she places a bomb undetected on Mecha Man's back by Shroud's instruction. Invisigal joined the Phoenix Program immediately after planting the bomb on the Mecha Man mecha suit a few months prior to Robert's arrival under the condition that they didn't ask why she joined.

Blonde Blazer was an active superhero being dispatched on the streets, earning a reputation for herself as a courageous hero. Eventually, she decided to broaden her career by moving into a management role, being assigned to take over SDN Torrance. Her leadership reshaped the struggling branch into a model for the company, in particular its efforts to rehabilitate former supervillains and retrain them as heroes through the Phoenix Program. Blonde Blazer is the one who hires Robert Robertson III to join SDN on the promise of helping him regain his superhero career in exchange. She nominally acts as his supervisor in the office during the events of  Dispatch, offering advice and critiquing Robbie's decisions as a dispatcher.

Warrant Officer Jun-A266 is a Spartan-III supersoldier and acting Chief of Staff for the Spartan Operations division of the United Nations Space Command. Trained as part of Alpha Company within the SPARTAN-III program, Jun's talent as a marksman and combatant distinguished him from the rest of Alpha Company. After his training, Jun led a Headhunter team, serving in numerous engagements throughout the Human- Covenant War against both human insurrectionist and Covenant forces. Jun's exceptional skill led to his transfer to Special Warfare Group Three of the UNSC Army, where he served on NOBLE Team with the call sign Noble Three, serving as the fireteam's marksman.

Dora grew up in the Peruvian rainforest, where she was homeschooled by her explorer parents, until age 16. At that age, concerned for her safety, her parents sent her to live with her cousin Diego in Los Angeles to attend high school while they went on an expedition to find the lost city of Parapata. Dora has an intrepid perky personality. Even as she continues to address an imaginary audience to the bafflement of those around her, she comes across as eccentric and charming. Dora continues to act with enthusiasm and positivity despite her fellow teenage peers' attitude and it serves her well in later life-threatening adventures. Dora is exceptionally knowledgeable in many aspects of the world, despite being socially stunted. She's clever and resourceful and can speak a number of other languages, notably Amharic. Despite her initial difficulties dealing with her fellow teenagers in a modern high school, Dora does not shy away from the challenge.

Quiet, known to the Soviet forces as Tixij was a female assassin during the 1980s. Originally an assassin for XOF, Quiet later defected to Diamond Dogs after being defeated by Venom Snake. Quiet wore a minimal amount of clothing at all times because she could only drink or breathe through her skin following parasite-treatment due to the serious injuries she had sustained while trying to kill Big Boss during the hospital raid; wearing too much clothing would lead to suffocation. After being defeated by Venom Snake in Afghanistan following a tense sniper duel, Quiet became a prisoner at Mother Base until she was allowed to accompany Venom Snake on missions as a buddy. Her weapons included two lethal sniper rifles nicknamed Wicked Butterfly and Sinful Butterfly as well as the non-lethal Guilty Butterfly.

Natalia Alianovna Romanoff was born on December 3, 1984 in Volgograd, Soviet Union. As an infant, she was deemed by the Red Room to possess genetic potential, and was purchased from her birth family. However, Romanoff's mother was not in agreement and proceeded to search for her, until General Dreykov had her killed to prevent the Red Room Program's existence from being revealed. Romanoff was brought up within the Red Room Academy, where she endured both an education and indoctrination into the world of spy-craft. Romanoff became the star pupil in in this strict training environment. As part of her induction, Romanoff had to inform Fury of her training from the Red Room Academy. Following her defection, she formed a lasting partnership with Clint Barton, becoming best friends with him. Together, they had tactical missions in many other locations. The pair grew so close that Romanoff was the only other person Barton talked about his secret family. She became a good friend to Barton's wife, Laura, and adopted an aunt-like relationship with their children, Cooper and Lila. Romanoff even trusted Barton enough to talk about Yelena Belova and how much she loved and missed her.

Elena was a bright and self-reliant investigator of historical mysteries. While in high school, Elena used to work at a Macho Nacho, having a manager who was a paranoid psychopath. After coming in second on a popular survival reality show, Elena parlayed her fifteen minutes of fame into hosting a cable adventure/archaeology show, Discovered. Later, Elena attended Rockport University and received a prize for an outstanding achievement before graduating and receiving an official degree in journalism. Elena was filming the discovery of Sir Francis Drake's coffin with Nathan Drake when their boat was attacked by a band of pirates, who had been tracking Nate for a while. As the two worked together to combat them, they were soon rescued by Sully in his seaplane and the three escaped the area. Back on shore, Elena contacted her executives, requesting a camera crew so that they could continue to film the story. Sully believed that having Elena come with him and Nathan broadcasting their mission to discover El Dorado would jeopardize their goal, and Nathan reluctantly agreed. They then went ahead and abandoned her while she was still on the phone, much to her fury. Elena managed to follow them, eventually running into Nathan, who was on the run from Atoq Navarro's mercenaries. After angrily giving him a punch to the eye and hearing about Sully's "death", she helped him escape to a jeep and they soon flew to the island where El Dorado was located. After defeating Navarro, Nate pulled Elena out of the wreckage, though as Navarro regained consciousness, Elena warned him, allowing Nate to save them both by finishing off Navarro for good. With the threat of El Dorado resolved, Nate and Elena leaned in to kiss but were interrupted by Sully, who managed to acquire a boat and some treasure from a group of dead pirates. As they sailed off into the sunset, Elena reminded Nate that he still owed her a story, after her camera was destroyed earlier.