Dragon Ball Fighterz

Plot

The game takes place sometime between "Universe 6" and "Future Trunks" arcs of Dragon Ball Super. The game's main antagonist, Android 21 (or later, her evil-half), was a normal female human who eventually became an Android created by the Red Ribbon Army after her son became the model for Android 16. Once she awakens, she repairs 16 and uses the Dragon Balls to resurrect Frieza, Cell, Nappa, and the Ginyu Force, and seals away the powers and souls of all of Earth's strongest warriors. Wanting to control the hungry monster within her, she and 16 develop a linking system originally created by Dr. Gero in which a human soul (the player) can possess the warriors and provide them strength.

Super Warrior Arc

The player possesses Goku and awakens next to Bulma, who asks him to confront the Earth's current crisis. Clones of the other fighters and villains have been appearing and the other Z Warriors are nowhere to be seen. After confronting the resurrected 16, Beerus and Whis arrive to explain the soul's link to Goku. Goku and Bulma leave to try and find 16 and the other Z warriors. Goku rescues Krillin, and they battle Cell who appears to have knocked out 18 and endangered an unknown woman. The woman claims to be a Red Ribbon scientist and informs them that they need to find the base emitting the power-suppressing waves to restore their abilities.

The reunited Z Fighters eventually confront 16, where he explains that the Red Ribbon Army's current leader, Android 21, is behind everything. The scientist Goku and Krillin saved from Cell earlier arrives and reveals herself to be Android 21. She destroys 16 for his betrayal and knocks out Goku when he tries to follow her. The player then possesses Cell's body and battles 21 before returning to Goku's body again. 21 devours the resurrected villains and decides to wait for Goku and his friends to grow stronger. Goku brings her and the other Z Fighters to the Sacred World of the Kai to protect Earth from the fight. With their combined power, Goku and the Z Fighters obliterate 21. Whis expresses his disappointment over the unanswered questions about Android 21.

Enemy Warrior Arc

16 implants the player's soul within the recently revived Frieza, much to the tyrant's ire. Frieza recruits the resurrected Nappa, Ginyu Force, and Cell to battle the clones and eventually confront the true culprit: Android 21. 21 forces the villains to battle and defeat Android 18. Goku and Krillin arrive while she pretends to be an innocent bystander to pit the heroes and villains against each other. The player prevents Frieza from killing Goku and the villains explain the situation to the heroes. Goku suggests that the two sides join forces to stop 21, and the villains reluctantly agree.

The villains aid Goku in rescuing the Z Fighters to fight 21, who destroys 16 after discovering his betrayal. Frieza suggests to the group that they strengthen their link with the player to gain back more of their power and defeat more clones as they're the source of 21's strength. After killing the final clone, they defeat Android 21 and use Bulma's machine to help Goku, Frieza, and Cell obliterate her for good. Following her destruction, everyone's powers are restored and Frieza expels the player from his body as the heroes and villains start fighting each other anew.

Android 21 Arc

Android 16 kidnaps Android 18 and implants the player's soul within her. He requests 21 and the player's help in combating the clones created by the Red Ribbon Army. 21 becomes increasingly unstable after each battle, but 16 refuses to explain her condition to 17 and 18. When Krillin finds the androids, 21 forces 18 to fight Krillin and nearly kills him, but the player links with 21 and discovers two beings within her body. 16 takes 18 to a lab and explains that the cells that created Android 21 may be going berserk and that he used the link system to stop her from going mad.

The androids are eventually confronted by Cell, who has regained most of his original power. 21 transforms into her temporarily purified Majin form to protect the androids but succumbs to her corrupted half's hunger again. She unintentionally kills 16 while she is struggling with her inner demon, causing her good and evil personas to split into two separate beings. Evil 21 devours Cell and the control to the power suppressor, drastically increasing her strength. Goku and Krillin rescue the androids and recruit them to combat Evil 21. The Z-Fighters battle Evil 21 for the last time on the Sacred World of the Kai. Once the fighters discover Evil 21's extraordinary regenerative capabilities, Goku attacks her with a Spirit Bomb. When Evil 21 starts resisting the attack, Good 21 pushes her into it, killing them both. Goku plans to request 21's reincarnation from King Yemma and to help the player return their original body.