Siu Mei Lin was born in the comfortable central district of Hong Kong. Her mother was a Hong Kong government worker, and she grew up surrounded by adults who regularly discussed serious topics. Around age ten, Mei Lin grew tired of these boring conversations and often slipped away to wander the city. Immediately after graduating from secondary school, Mei Lin became a close protection operative. With private tuition, she developed explosive short-range power and combat skills. In 2004, Mei Lin participated in Operation High Sun. During the mission, she had an altercation with Spetsnaz Operator Shurat "Fuze" Kessikbayev, considering him to be a "questionable asset" due to believing he had a disregard for civilian lives. The situation was only resolved after FBI SWAT Operator Eliza "Ash" Cohen had stepped in.[3] In 2005, she collaborated with the Japanese Special Assault Team where she met Masaru "Echo" Enatsu. Both of them became romantically involved with one another before breaking up a year later. Aiming to become an all-purpose operative, Mei Lin travelled to a female exclusive training facility in Tel Aviv, Israel. She spent two years training and serving with the Caracal Battalion, where she developed an expertise in firearms and combat driving manoeuvres. After completing her program, Mei Lin returned to Hong Kong. In 2008, she reoriented her career toward the police force after being involved in a kidnapping situation. She was first recruited to the Hong Kong Police Force to review the processes used by the Police Tactical Force's Security Wing. During this time, her interest in leading international rescue operations grew, which drove her to apply to the elite SDU: Flying Tigers. Joint training with the SAS and her creative use of flashbangs earned Mei Lin the codename, Ying (Firefly).

Mileena is a mutant hybrid clone of Kitana, created in Shang Tsung's flesh pits at the behest of Shao Kahn, who had become increasingly paranoid that Kitana would one day learn the truth and betray him. As a fusion of Tarkatan blood and Edenian physiology, Mileena combines and fully utilizes attributes of both races in combat, boasting incredible speed, brute strength, and nimble acrobatic prowess. Mileena is the older twin sister of Kitana & daughter of Empress Sindel & Emperor Jerrod. Mileena is loved greatly by her family and those close to them, including Li Mei, her mentor-in-kombat and, an Umgadi warrior named Tanya, who is also Mileena's lover. Though some Outworlders believed Kitana to be a better choice for the heir to the throne, due to Mileena's impulsiveness, Mileena was still regarded well by her people. After Jerrod's unjust murder, Li Mei would resign from the Umgadi in disgrace, as it was on her watch that the Emperor had been killed, leaving the bonds between her and the royal family shattered.

Douglas Rutland was born to an affluent family in the city of Khetleya, on the remote colony of Asphodel. In 2517, he was abducted and conscripted into the SPARTAN-II program headed by Dr. Catherine Halsey at the age of six. He was then taken to the human colony world of Reach and trained by the AI Déjà and Chief Petty Officer Franklin Mendez along with the rest of the SPARTAN children. Douglas-042 had a tough time adjusting to the SPARTAN-II program. However, after an initial bout of culture shock, his anger gave way to a quiet confidence. In 2525, he and the other candidates underwent a series of augmentations to improve their strength. Douglas was one of a number of "washouts" whose bodies initially rejected the augmentations, but he was able to be retrained and re-augmented separately. During the process, he was partnered with fellow augmentation washouts Alice-130 and Jerome-092, with the three being organized into an incarnation of Red Team. Douglas was a member of Red Team during the Battle for Arcadia in February 2531 and was tasked with delaying the Covenant forces long enough to evacuate the civilians of Arcadia.

Alice Treske was born in 2511 on the sparsely populated colony world of Passage. She was able to quickly learn rudimentary engineering at a young age — something that amazed her family and, along with her genetic make-up, set her apart as a suitable candidate for the SPARTAN-II program. In 2517, she was abducted and sent to Reach, where she was put through years of rigorous military training—a process she fully embraced and relished. In 2525, she and the other candidates underwent a series of augmentations to improve their strength, speed, and resiliency among other things. Alice was one of a number of "washouts" whose bodies initially rejected the augmentations, but she was able to be retrained and re-augmented separately. During the process, she was partnered with fellow augmentation washouts Douglas-042 and Jerome-092, with the three being organized into an incarnation of Red Team. In 2531, Alice accompanied Red Team in the Battle for Arcadia to aid the rescue of civilians on Arcadia. Red Team survived long enough to be supported by the arrival of the crew of the Spirit of Fire, who defeated the remnant of the Covenant forces at Pirth City.

Mako was born on April 23, 2003 to parents Sumako and Masao Mori, a sword maker. An only child, Mako grew up in village in Tanegashima and lived a relatively comfortable and happy life with her mother and father. Mako would spend hours in her father's workshop, watching as metal is forged, hammered, cooled and sharpened into weapons. Her fascination with her father's profession instills tomboyish attitudes in her. At some point in time, he gifts her with a Hanbō staff. Mako is ten years old when the first Kaiju, Trespasser, attacks San Francisco in 2013. She overhears the news broadcast on the radio. Sunday, May 15, 2016 marked the attack of the Kaiju Onibaba in Tokyo. When her father is diagnosed with cancer, Mako and her mother head into Tokyo to get him treatment. Afterward, her parents took her shopping where they bought her a pair of red shoes. Mako and her family are bombarded by the people trying to escape. During the chaos, Mako’s shoe strap breaks and pulls away from her father in order to retrieve it. When she finally recovers her lost shoe, she loses her parents in the crowd and is left standing alone in an abandoned street. Distressed, Mako searches for her parents; she calls for her mother as the military converges on Onibaba. She is forced to fend for her life during the military’s battle against the creature that remained in close proximity. When she tries to hide from it in an alley, Onibaba finds her and tries to pull her out of the alley. However, the intervention of the Jaeger, Coyote Tango, saves her life. Her survival in the face of Onibaba’s rampage made her an iconic figure in the media. After Mako is saved by Stacker Pentecost, it was some time before Pentecost would encounter her again. In the aftermath of her parents' death, Mako is sent to live in an orphanage. When his friend was diagnosed with cancer, Pentecost decided to adopt Mako. Mako joins the Jaeger Academy in 2021.

Hanzo Hasashi was once a member of the Japanese Shirai Ryu ninja clan. Given the name Scorpion for his blindingly fast and deadly fighting skill, his life was blessed with glorious kombat in the name of his Grand Master. But when he, his family and his clan were brutally exterminated by Sub-Zero and the Lin Kuei, Scorpion's existence became eternal torment. Resurrected by the malevolent necromancer Quan Chi, he entered the Mortal Kombat tournament to slay Sub-Zero and avenge the murders of his kin. Hanzo travels to the Lin Kuei Palace when Kuai Liang invites him there. The Grandmaster of the Lin Kuei speaks to him about how they have both reformed their clans to protect Earthrealm and that they should becomes allies. Skeptical, Hanzo asks if this means Sub-Zero will finally confess that the Lin Kuei was guilty of the first iteration of the Shirai Ryu's demise. Sub-Zero then explains how he killed Sektor for completely turning the Lin Kuei into cyborgs and that he has discovered that his clan had lost its honor far before the Cyber Initiative. However, they are interrupted by Frost, Sub-Zero's pupil, who attacks Hanzo. Believing that Sub-Zero's invitation was an assassination attempt on himself, Scorpion defeats Frost and attacks Sub-Zero. After fighting with the Lin Kuei Grandmaster, he prepares to kill him, but stops and calms down when Sub-Zero saves him from another attack by Frost. With Sub-Zero explaining that his intentions are true and Frost acted on her own intention, Scorpion forgives his old nemesis. In the Lin Kuei Palace, Sub-Zero shows Sektor's memory banks, revealing that the Lin Kuei had Quan Chi eradicate Hanzo's clan and family in exchange for their service, but Sektor refused to fulfill the agreement because Quan Chi resurrected Hanzo as Scorpion. Driven by rage, Hanzo Hasashi went through Hell and back to avenge his family and clan, never resting until he cut down their murderer, Quan Chi.

An assassin of the Lin Kuei clan, Kuai Liang commands the power of ice and cold. Unlike other members of his clan, he and his older brother, Bi-Han, were abducted as children by the Lin Kuei and trained in the techniques of assassination throughout their lives. Though his codename is Tundra, he has now assumed the mantle of Sub-Zero to honor his brother after Bi-Han's mysterious death. With the help of his fellow Lin Kuei Smoke, Sub-Zero tirelessly hunts the one who killed his brother. Kuai Liang, who has taken the role of grandmaster of the Lin Kuei, invites Hanzo Hasashi at the Lin Kuei temple to make amends. Hanzo thinks it is a ruse to completely exterminate the Shirai Ryu from existence, because for the longest time, he thought the Lin Kuei was responsible for the extinction of his clan. Kuai Liang explains that the Lin Kuei's honor was already blemished even before the Cyber Initiative. All of a sudden, Frost appears to attack the former Scorpion, making Hanzo believe Kuai Liang did want to kill him and fights him. With Hanzo about to kill Kuai Liang, Frost prepares for another sneak attack, but she is intercepted by Kuai Liang, encasing her in ice. To prove his sincerity, Kuai presents Hanzo Sektor's severed head, and shows him the cyborg's preserved memories. It is revealed that it was actually Quan Chi, the very person Scorpion served as a revenant, who was responsible for the murder of the Shirai Ryu, Hanzo's wife Harumi and their son Satoshi. With the truth finally revealed to him, Hanzo and Kuai Liang have since gained mutual respect as allies. Grandmaster of the Lin Kuei clan. Kuai Liang beat death to redeem his clan for the evil committed by Sektor and the Cyber Lin Kuei. He rebuilt the Lin Kuei and brokered peace with their Shirai Ryu rivals. Now, he hopes to finally close the book on sins of Lin Kuei past.

Hanzo Hasashi was once a member of the Japanese Shirai Ryu ninja clan. Given the name Scorpion for his blindingly fast and deadly fighting skill, his life was blessed with glorious kombat in the name of his Grand Master. But when he, his family and his clan were brutally exterminated by Sub-Zero and the Lin Kuei, Scorpion's existence became eternal torment. Resurrected by the malevolent necromancer Quan Chi, he entered the Mortal Kombat tournament to slay Sub-Zero and avenge the murders of his kin. Hanzo travels to the Lin Kuei Palace when Kuai Liang invites him there. The Grandmaster of the Lin Kuei speaks to him about how they have both reformed their clans to protect Earthrealm and that they should becomes allies. Skeptical, Hanzo asks if this means Sub-Zero will finally confess that the Lin Kuei was guilty of the first iteration of the Shirai Ryu's demise. Sub-Zero then explains how he killed Sektor for completely turning the Lin Kuei into cyborgs and that he has discovered that his clan had lost its honor far before the Cyber Initiative. However, they are interrupted by Frost, Sub-Zero's pupil, who attacks Hanzo. Believing that Sub-Zero's invitation was an assassination attempt on himself, Scorpion defeats Frost and attacks Sub-Zero. After fighting with the Lin Kuei Grandmaster, he prepares to kill him, but stops and calms down when Sub-Zero saves him from another attack by Frost. With Sub-Zero explaining that his intentions are true and Frost acted on her own intention, Scorpion forgives his old nemesis. In the Lin Kuei Palace, Sub-Zero shows Sektor's memory banks, revealing that the Lin Kuei had Quan Chi eradicate Hanzo's clan and family in exchange for their service, but Sektor refused to fulfill the agreement because Quan Chi resurrected Hanzo as Scorpion. Driven by rage, Hanzo Hasashi went through Hell and back to avenge his family and clan, never resting until he cut down their murderer, Quan Chi.

An assassin of the Lin Kuei clan, Kuai Liang commands the power of ice and cold. Unlike other members of his clan, he and his older brother, Bi-Han, were abducted as children by the Lin Kuei and trained in the techniques of assassination throughout their lives. Though his codename is Tundra, he has now assumed the mantle of Sub-Zero to honor his brother after Bi-Han's mysterious death. With the help of his fellow Lin Kuei Smoke, Sub-Zero tirelessly hunts the one who killed his brother. Kuai Liang, who has taken the role of grandmaster of the Lin Kuei, invites Hanzo Hasashi at the Lin Kuei temple to make amends. Hanzo thinks it is a ruse to completely exterminate the Shirai Ryu from existence, because for the longest time, he thought the Lin Kuei was responsible for the extinction of his clan. Kuai Liang explains that the Lin Kuei's honor was already blemished even before the Cyber Initiative. All of a sudden, Frost appears to attack the former Scorpion, making Hanzo believe Kuai Liang did want to kill him and fights him. With Hanzo about to kill Kuai Liang, Frost prepares for another sneak attack, but she is intercepted by Kuai Liang, encasing her in ice. To prove his sincerity, Kuai presents Hanzo Sektor's severed head, and shows him the cyborg's preserved memories. It is revealed that it was actually Quan Chi, the very person Scorpion served as a revenant, who was responsible for the murder of the Shirai Ryu, Hanzo's wife Harumi and their son Satoshi. With the truth finally revealed to him, Hanzo and Kuai Liang have since gained mutual respect as allies. Grandmaster of the Lin Kuei clan. Kuai Liang beat death to redeem his clan for the evil committed by Sektor and the Cyber Lin Kuei. He rebuilt the Lin Kuei and brokered peace with their Shirai Ryu rivals. Now, he hopes to finally close the book on sins of Lin Kuei past.

Born on Earth on May 29, 2501, Forge's life revolved around the military. His family lineage had been a part of the military for generations, dating as far back as World War II. He joined boot camp at the minimum age of 16, where his superiors remarked there was "something special" about him. Forge's wife, Laine, gave birth to a daughter, Lucy Orion "Rion" Forge, around 2525. Although John's marriage was strained even before the birth of his child, he and Rion would always remain on good terms. Forge worked a stint as a military on Mars and did some "grunt work" on Epsilon Eridani IV during the Insurrection. However, he hated policing and jumped at the chance to be assigned to Fort Marshall. Forge was arrested twice during his service. His first arrest was for directly disobeying orders and disorderly conduct. Even though his actions saved four members of his squad, Forge spent a total of 2.4 years in prison, an infraction that removed any chance of moving through Officer Candidate School or even progressing beyond the rank of sergeant. However, Rion proclaimed her father as a hero, and all charges were dropped, where he was later reassigned to the UNSC Spirit of Fire by Admiral Preston Cole himself. Spirit of Fire's commanding officer, Captain James Cutter, came to trust Forge so thoroughly that he granted the sergeant a degree of authority significantly exceeding that afforded by his rank.

As a girl, Sonya idolized her father, a U.S. Marine. When he embarked on a covert operation and never returned, she vowed to honor his memory. She joined the Marines and pushed herself hard, quickly rising in rank. Sonya's impulsiveness didn't win her many friends, but her skills and loyalty gained the respect and admiration of all who fought beside her. Though she has never given up her quest to uncover the truth behind her father's disappearance, she realizes that she might never see him again. Now, Sonya finds herself caught up in the mysterious Mortal Kombat tournament. Like her father, she too could become a casualty of war. Sonya braved the Mortal Kombat tournament, defended Earthrealm, and rescued her partner, Jax Briggs. Serious to a fault, she never takes time for personal leave, preferring to remain vigilant until all realms are safe from conquest.

Kitana serves as one of Outworld’s champions during the first and second Mortal Kombat tournaments. 10,000-year-old assassin and Princess of Outworld. Shao Kahn married Kitana’s mother and raised Kitana as his loyal heir, concealing the truth that he murdered her father to conquer Edenia. Now that this truth is out, Kitana is on a quest to avenge her father’s name." After a fierce fight in Kotal Kahn's arena, she congregates with the other "good" kombatants after D'Vorah transports the "bad" kombatants to her hive. She and Jade stays in Outworld to aid Kotal against Shao Kahn. Once the fight was over, Kitana exchanges a few words with Liu Kang and hugs him goodbye before he returns to Earthrealm with Kung Lao and Raiden. She is instructed to seek out and recruit Sheeva, as her armies would prove useful to assist Kotal against Shao Kahn. With the support of both Sheeva and Baraka, including Erron Black’s present-self, Kitana and her allies storm the arena to save Kotal from execution. Kitana rushes to confront Shao Kahn before he can kill Kotal. "Father" and "daughter" exchange words before clashing and Kitana besting the mighty konqueror in the finale. Kitana then vows to the defeated tyrant that she will not inherit Shao Kahn's cruelty. Then she removes his helm off his face, slashes his eyes with her fan blade, defeating the tyrant, much to the Shaolin’s proud surprise in relief. With Shao Kahn's defeat, she tells Kotal that his throne is secure. However, due to Kotal being severely crippled by Shao Kahn in that battle, he appoints Kitana as the new Empress of Outworld. Now Kitana Kahn, she unites the forces of Outworld against Kronika.

Jill Valentine is an American police officer formerly linked to the Special Tactics and Rescue Service, the special forces division of the Raccoon Police Department. Once back in Raccoon City, S.T.A.R.S.'s request for a full-scale investigation of Umbrella's activities was denied by their superior, Chief of Police Brian Irons. Their investigation was stalled by Irons' stone-walling, and they were suspended from the force. While Redfield left for Europe to investigate Umbrella there, the other survivors left for their own respective interests. By mid-September, only Valentine and Vickers remained in Raccoon City. Valentine herself planned to leave by the end of the month; under continued surveillance, she was aided by Vickers, who maintained the guise of alienating his comrades to operate as a mole in the RPD. Over the course of a few short days, from 23–28 September, an accidental outbreak at Umbrella's NEST facility had made its way into Raccoon City and saw a large-scale outbreak manifest, starting from scattered violence on the 24th to heavy rioting on the 28th. It was at this time that Valentine became aware of the dire state of affairs in the city, first by receiving a warning on the phone by Vickers and immediately after by an attack on her apartment by the Nemesis, a prototype Umbrella B.O.W. sent into the city with orders to assassinate the remaining S.T.A.R.S. members. Valentine had to flee through the streets of Raccoon City. Valentine met with Vickers shortly after escaping from her apartment, and they both decided to leave town before the situation worsened.

A close friend to Cassie Cage, Jacqui Briggs is the daughter of Jackson Briggs and Vera Briggs. After Jax was resurrected from being one of Quan Chi's slaves during the Netherrealm War, he met Vera and they went onto marry, the two becoming parents to Jacqui. After her birth, he became overly protective of Jacqui and wanted her to live a normal life. At some point, Jacqui became a professional kickboxer and eventually competed in the Junior Olympics and enlisted in a training camp. Despite her father not approving of her decision to join the Special Forces, Jacqui sees it as her duty to protect Earthrealm and to avenge her father from the suffering he endured from Quan Chi and Ermac. Jacqui enjoys the time she spends with Cassie, but was often annoyed by her friend's lack of hindsight in their youth and is often the voice of reason when the two get into predicaments. During missions, Jacqui becomes very serious and supports Cassie’s leadership. Jacqui is very protective of her family, but is easily annoyed whenever her father’s history of being Quan Chi's slave is brought up, as shown when Kung Jin continues to casually do so.

Ada Wong is the pseudonym of an enigmatic unnamed spy of Asian-American descent. She has gained notoriety in the corporate world for being able to handle serious situations and the most difficult requests without guilt. Wong has acted secretly in the background of many biohazard incidents and collected information that became useful to several organisations while at the same time operating to undermine them. However, Wong follows only her own "true purpose" and has often betrayed the organisations and customers she is affiliated with to achieve it. In September 1998, Wong was sent into Raccoon City to recover a sample of G-Virus. Research on the viral weapon was completed, though Umbrella's leadership determined chief researcher Dr. William Birkin was preparing to flee town with the research. While there, Wong became aware of or conscripted Ben Bertolucci into her investigation. Bertolucci was a freelance reporter who was investigating Umbrella's illegal research and had confirmed the existence of an underground research complex and would, in theory, know the means to infiltrate it. Bertolucci was detained by police chief Brian Irons at the start of the t-Virus outbreak.

Kai’s sister Nya is focused and confident, competitive, and highly motivated. She doesn’t just climb in and out of her mech, she gives each move an aerobatic flair, and when she rides her motorcycle through the halls of NINJAGO High school, everybody had better get out of her way. Nya’s role model and she-ro is the famous ninja, the Lady Iron Dragon. Nya is the Water Ninja, and one of the six Ninjas trained by Master Wu. She is Kai's sister. She drove the Water Mech.

Every single movement, however trivial, is considered classified for Albion Headquarters' Special Forces, 'Colon'. Their identities are so heavily guarded, even mentioning their real names to one another was forbidden. Thus, they resorted to communicating through their code names, even within Albion. This applied to Freyna, also known as 'No. 6', as well. Even with her long-time partner, 'No. 9,' or O'Neill, no names were ever used. The moment they joined Colon, Freyna, and O'Neill, who had been subsequently drafted into Colon after graduating from the military academy, were not allowed to call each other by their names. Under the teachings of the organization, Freyna carried out her given missions with impressive efficiency. Regardless of who the target was, killing them came naturally to her. So much so, it became second nature to her, and in the process, any room for hesitation disappeared. That is, until the 'Room 0 Incident'. Shortly after they began their operation report, the agents who had been deployed, except for Freyna, complained of pain before collapsing to the ground, only to begin transforming into Vulgus. Naturally, Freyna did what she had to do, without hesitation. After all, it was Colon's duty to eliminate any threats, even if they had just been human; be they teammates or lovers. After a few gunshots, the agents, including O'Neill, fell to the ground. Freyna frantically rushed to O'Neill. With a contorted face, O'Neill grimacingly said, "You must live, Freyna." As soon as he uttered these words, he began to swell up, his body eventually rupturing. The venomous spores spread from O'Neill's corpse, filling up Room 0. The bewildered officer quickly grabbed Freyna's arm and dragged her out, firmly locking Room 0.

A descendant who is notorious for being the 'troublemaker of Albion'. Due to her unique Arche ability to generate electricity through her physical movement, she is also considered to be a walking power generator. There is a rumour that she is the fastest runner in all of Albion. In Albion, there were as many orphans as there were casualties of war. But Bunny, even as an adult, harboured an unresolved question: "My parents weren't even soldiers... so why did they abandon me?" Her parents, who only occasionally showed their faces and disappeared after her sixth birthday, left Bunny waiting and waiting. Left alone with her grandmother, Bunny seemed to channel her inner turmoil into causing major incidents. Notably swift on her feet, she had dodged the police multiple times, earning the moniker of Albion's Greatest Troublemaker. She even believed she was out of the soldiers' reach. Bunny had stolen soldiers' weapons and sold them on the black market, using the proceeds to dutifully support her grandmother amidst the darkness. At that time, Bunny's life goal was to secure a room in Albion's finest retirement district to ensure a comfortable dusk for her grandmother. Bunny, carrying on the mission of her absent parents, needed a lot of money, but nothing was too challenging for this quick-witted Rabbit. As long as she could steal and run, no one could catch her. Even on the day she stole a bunch of expensive military grenades, she had no worries... except that she had fled to a fuel depot with a faulty circuit breaker.

Hailing from the back alleys of Albion, she never forgets her past and keeps it buried deep within her heart while doing her utmost as a Descendant. Possessing the Arche ability to manipulate the cold at will, she is considered to be a very gifted young Descendant. Hailing from Albion's underbelly, Viessa was a runner for a smuggling gang that brought in banned goods from the old, abandoned lands. During those years, Viessa was known for her ability to bring in items that were more luxurious and expensive than what the other gang members brought in. Viessa's sphere of activity was a city that was frozen a century ago by a Colossus called the Dead Bride. The place was eerie, filled with frozen corpses and the fallen Colossus, but items deemed expensive have been preserved, remaining intact. Moreover, because of the cold, the other gang members couldn't even get near it. But for her, it was her own paradise; she couldn't understand why everyone would shiver so much in the cold. But this paradise turned into a cold hell overnight. The Colossus Dead Bride, which was thought to be destroyed, was simply lying dormant, and the slight change in temperature caused by Viessa's presence awakened it. In the end, Viessa was forced to fight the Colossus. She was barely able to defeat it, thanks in part to the Descendant Corps, who joined her and were deployed after an anomalous energy generation had been detected. Of course, their encounter was awkward, to say the least.