|First Appearence:||Mortal Kombat 2|
 Mortal Kombat: Special Forces
Major Jackson Briggs is one of the toughest units in the Special Forces. He receives a distress call from Gemini telling him that there was a prison break and several members of the Black Dragon such as Tasia, No Face Tremor and Jarek and have went to a place in Chicago. Jax believes that the mastermind behind the prison break was none other than Kano. Jax tracks down the escapees and finds No Face in an abandoned warehouse and defeats him, he then faces Tasia in the sewers and defeats her. Jax then receives word that the Black Dragon took hold of a corporate building and Jax heads there. In the building, he faces Jarek and defeats him. Jarke tells Jax that the last escapee: Tremor is in the lost city of Sinkiang, as Jax defeats Tremor he also finds a portal to Outworld. Where he faces Kano who takes in his possession: The Eye of Chitian which has strong magic. Jax defeats Kano and takes the artifact with him.
 Mortal Kombat 2
In the time following the 10th Mortal Kombat Tournament in Earthrealm (which was won by Liu Kang as he defeats both Goro and Shang Tsung to preserve Earthrealm's independence). He finds another warrior who fought in the tournament: The Martial Arts Actor: Johnny Cage. He interrogates Cage who tells Jax that Sonya has been captured by Tarkatan forces who also took Kano. Jax then releases Cage and they join up with Liu Kang and his Shaolin brother: Kung Lao along with Raiden to venture to Outworld to compete in an Outworld sanctioned Mortal Kombat Tournament sponsored by the realm's emperor Shao Kahn. Jax fights many opponents such as Reptile and Baraka. Jax would make it to Kahn's arena and free Jax as well as Kano during the climatic events of the tournament which ended with Liu Kang winning over Kahn. In th etime following the Outworld tournament, Jax would outfit both of his arms with cybernetic enhancing implants which can increase his arm strength 50 fold.
 Mortal Kombat 3
Jax's cybernetic arms would be put to the test as Kahn invades Earthrealm, and sends out armies of Tarkatans, Centaurs and Shokan to eliminate any human not consumed by Soulnados. Jax would fight valiantly, he would face Baraka once again along with Noob Saibot, Ermac and Motaro. As Kahn's invasion was thwarted and Earthrealm separates from Outworld. He and Sonya were given permission to form another branch of Special Forces call ed the Outerworld Investigation Agency (OIA). The Agency begins by using the Eye of Chitian which can allow the Agency to create portals at will and to wherever. They send scouts to these other realms to gain insight and map out the realm.
 Mortal Kombat 4
Special Forces were hard at work to eradicate the Black Dragon as it was taken a serious blow following the death of Kano. Soon only Jarek remained. But as the fallen Elder God: Shinnok has escaped from the Netherrealm which forces Special Forces and Jarek to join forces in hopes to defeat the Fallen Elder God for good. After Liu Kang and Raiden defeat Shinnok, Jarek then turns on the Special Forces as he attacks Sonya, but falls off a cliff doing so, but then drags Sonya with him. But Jax quickly finds out and returns the favor by dropping him off the same cliff he fell to. But this was not the end for Jarek. Some time after that, Jax and Sonya found Cyrax a former member of a cyberized Lin Kuei, and help him regain his memories as when he was a human. They succeed and Cyrax joins Special Forces as a result.
 Mortal Kombat: Deadly Alliance
As Special Forces gains new members (one of them being Kenshi: a blind swordsman from Japan) it also has gained much strength. But following Liu Kang's death at the hands of the Deadly Alliance, Jax along with Sonya, Johnny Cage and others make a plan to act revenge. But Special Forces as taken serious blows as Kenshi and Cyrax end up missing, and a member of the Red Dragon named Hsu Hao sabotaged a base of theirs with a nuclear bomb. Jax then follows Raiden to Shang Tsung's island to open a portal to Outworld, Jax then uses this as an opportunity to find and kill Hau Hao. Jax eventually finds and fights this warrior. Jax kills Hsu Hao by pulling out and destroying his artificial heart. Jax and the other Earthrealm Warriors eventually find Shang Tsung and Quan Chi. Unfortunately however, Jax is a victim of the might of the Deadly Alliance. But as the Dragon King: Onaga awakens, and Raiden uses his powers to sacrifice himself, Shang Tsung and Quan Chi. Onaga uses Shinnok's Amulet to revive the dead Earthrealm warriors, including Jax.
 Mortal Kombat: Deception
Jax was revived by Onaga, including Sonya, Johnny Cage, Kitana and others. But they also were willing slaves to the Dragon King. But as Liu Kang's Soul along with Ermac reversed the effects of the Amulet's hold that it had on the warriors, Jax then comes to his senses and re-joins Special Forces.
 Mortal Kombat Armageddon
Jax commands Sonya to find Sektor: The leader of the Tekunin ninja clan. But in the end, Jax competes in Aamrgeddon and fights and defeats Quan Chi, but was defeated by Reiko who posed as Shao Kahn. But as the fight settled, Jax was one of those who died during the horrible events.
 Mortal Kombat (2011)
Jax was taken along with other members of Special Forces to Shang Tsung's Island, forcing Sonya to compete in the Tournament. As Sonya investigates, she finds Jax in Goro's Lair and after she fights and defeats Noob Saibot (as Sub-Zero) and Raiden, she frees Jax. But as Sonya takes the injured Jax, she was encountered by Kitana and Jade, and then as the helicopter was shot down by Shang Tsung, he challenges Kano to fight Sonya. But as Sonya wins, she is encountered by Raiden as well as Johnny Cage and Liu Kang. Raiden attends to Jax who uses his powers to heal his injuries. Jax is then gained his trust in the thunder god. As Liu Kang fights Sahng Tsung and wins and preserving Earthrealm's freedom from Outworld, they head back to the Wu-Shi Academy. But as Shang Tsung appears at the academy offering Raiden and his Earthrealm warriors to participate in Shao Kahn's own Mortal Kombat tournament. Raiden refuses initially but Shang Tsung commands Tarkatans to attack the academy and Jax fights against them, only to eventually get defeated by them. When he came to, Johnny Cage, Liu Kang, Kung Lao and Raiden inform Jax that the Tarkatans have taken Sonya hostage, forcing Raiden and the rest of the warriors to particiapte in Kahn's tournament. Jax and Cage go with Raiden while Liu Kang and Kung Lao try to stop D'Vorah from taking their Shaolin masters. Jax fights Baraka and wins against him. After his fight, he, Cage and Raiden are in the Armory, and after Cage has a hard time shutting his mouth, Jax fights Cage and wins against him, just then Jade enters the armory and fights Jax, but Jax beats him. They enter the Dead Pool and Jax fights Sheeva and wins against her and then rescues Sonya. They split up with Raiden and head to the Soul Chamber, and after Kuai Liang (the new Sub-Zero) defeats a cyberized Cyrax Jax and Sonya meet up with him, and they disclose information on who killed his brother. Then, Ermac appears and as jax grabs him and is about to finish him, Ermac uses his powers to not only dislodge Jax's hand around his neck but to also destroy both of his arms. Sonya is able to stop the bleeding and after Sub-Zero defeats Ermac, he tells him that there's a portal that leads them back to Earthrealm. Jax and Sonya return to Special Forces. There, his destroyed arms are replaced with cybernatic ones which are to not just replace the arms he has lost but to allow him to punch and hit much harder. He and Sonya re-join the rest of Earthrealm's warriors which include Smoke, Kabal, Stryker, Nightwolf and a cyberized Sub-Zero. As Raiden and Liu Kang talk to the Elder Gods, the Lin Kuei attacks the Church. But they realize until too late that the Lin Kuei are pawns to the more deadlier Sindel who kills most of Earthrealm's warriors (including Jax). As Raiden goes to the Netherrealm to talk to Quan Chi about assistance, he realizes that Quan Chi intends using the souls of the dead Earthrealm's warriors for himself and to aid Outworld. But eventually Raiden defeats Shao Kahn and saves Earthrealm. But quickly realizes that the cost was almost unaffordable. He goes with Johnny Cage and Sonya: the last survivng of Earthrealm's warriors.
 Mortal Kombat X
As an undead revenant serving Quan Chi, Jax fights and defeats the Cyberized Sub-Zero in order for Quan Chi to destroy Sub-Zero's cyberized body and use his human body. As Shinnok attacks Earthrealm, Jax alongside other undead revenats at the forest near the Temple of the Jinsei. Johnny Cage (now a member of Special Forces) fights and defeats Jax. Several years later, Cage and Sonya were in Quan Chi's palace in the Netherrealm. Jax fights Sonya only to lose against his former partner, but Quan Chi mortally wounds Cage and seeing an undead form of Cage about to come out of the pit. Raiden uses his powers to reverse the process. As Sonya defeats Quan Chi, she beats him to sever the tie between Cage's soul and Quan Chi. But by saving Cage he also brings Jax, Scorpion and Sub-Zero back to life as well. As Jax comes back to life, he can't help but feel responsible for the thing he has done for Quan Chi, he decides to retire from Special Forces. During his retirement, he marries a woman named Vera and they have a daughter named Jacqueline (or Jaqui Briggs). Around 25 years later, Jax has settled to a farmer's life. Though he disapproves his daughter's decision to follow in his footsteps and join Special Forces, but has to respect her decision nonetheless. But as Special Forces struggle to get a hand on their recent fight against Quan Chi (as D'Vorah turns her allegiance to Shinnok), Cage and Sonya visit Jax and urge him to return to Special Forces. With some reluctance, Jax agrees to go back to Special Forces. He ventures to the Netherrealm where he finds Quan Chi and his army of undead revenants. He defeats them all and captures Quan Chi and brings him back to Special Forces, only to have Hanzo Hasashi kill the scorcerer and accidently releases Shinnok from the Sacred Amulet. He looks on as Cassie Cage's team defeat the fallen elder god.
 Mortal Kombat vs. DC Universe
During the game, Jax and Sonya are caught in a battle between both of the combatting universes. When he attacked in his headquarters by a strange assailant, Jax follows his enemies through a portal where he then fights Captain Marvel. Jax also locks fists with Lex Luthor on several occassions which symbolises some certain rivalry; both are iron-clad, and rely heavily on their technical machinery in combat, Lex Luthor is impressed by Jax's cybernetic arm extentions.
 Quotes (From Mortal Kombat VS. DC Universe)
- "It's a portal, and as for doing business maybe it's time to give you a demonstraion of *MY* impressive technology.
- "Well now, this just got a whole lot more interesting."
- "Now that the introductions are out of the way, we're shutting you down."
- During the making of Mortal Kombat 2 Jax was supposed to wear some kind of gi (it was collored yellow in the studio pictures). But the actor who played Jax (John Parrish) accidently tore the pants wide open. This is when Jax went shirtless and had the black pants (bigger) with red and white stripes.
- During the making of Mortal Kombat 3 John Parrish went over 7 hours of make-up on both of his arms for the Cybernetic teramulation arms that Jax apparently equiped himself in the Mortal Kombat story.