Fu

Fu (Fuu) is considered by Dabura himself as his rightful successor to his throne as King of the Demon Realm. Thanks to Towa he eventually became the new Dark King.

Personality
As a young adult, Fu is a bespectacled youth with a fearless smile. While mistakenly believed to be evil and an underling of his uncle, he prefers warping timelines to help others instead of causing meaningless destruction through his alterations, and is not interested in revenge or reviving the Demon Realm. Fu does not like to fight but instead loves science and the possibilities his changes in history can create, taking after his mother Towa but in a more positive sense. Fu's interest in science goes so far to experimenting on scenarios, the mechanics of fighting, and using time rifts and paradoxes for his own benefit such as creating time paradoxes on purpose in order absorb more power. However, once gaining some benefit from his experiments, Fu tends to try to use these benefits to better the world, making him neither truly good nor evil. As a result he can best be described as akin to a well meaning yet mad scientist of sorts who illegally alters history.

However despite his positive traits, he is still capable of engaging in questionable actions such as altering history illegally in direct defiance of Chronoa's authority and the Time Patrol's opposition, imprisoning various fighters from across time on the Prison Planet, and turning Cooler into his puppet by converting him into a Meta-Cooler. Additionally his research also tends to meddle with the lives of innocent people of the timeline he creates or alters simply to satisfy his intellectual curiosity. He also became enraged at Goku (Xeno) and Vegeta (Xeno) for destroying his lab and sought to punish them for their interference.

Background
Fu is a demon, and the son of the artificial being Mira and the evil scientist Towa. He himself is an artificial being, a unique mutant made from the cells of Towa, Goku, Vegeta, Frieza, Majin Buu, Turles, Bojack, Cooler, Android 17, Syn Shenron, etc as well as all of the other strongest fighters; he was created as the ultimate existence so as to destroy the Time Patrol and revive Demon Realm. His body hides a lot of mysteries, and he was greatly affected by Mira after meeting him. He possesses great power, and inherited a brilliant scientific mind from Towa.

Dark King Mechikabura Saga
Upon the defeat of Mechikabura, as the Demon Realm crumbles, Towa creates Fu. Towa - accompanied by Mira - then flees to the edge of a cliff, sending a baby Fu away safely through a rift in space. As he is sucked away by the rift, he bursts into tears, and passes through the rift, left to grow up on his own. At some point, he figures out how to use the strongest sealing spell in history and uses it to gather planets to form the Prison Planet, capturing and recruiting various warriors (including Hearts and his Core Area Warriors) for a massive experiment.

Prison Planet Saga
Fu appears unexpectedly on Beerus' Planet telling those present that he is a friend of Future Trunks. He explains that Trunks has been captured and is currently located on the Prison Planet where resides the most dangerous criminals in the Timelines. He urges them to follow after him so they can save him as he teleports away.

Shortly after when Xeno Goku as Super Saiyan 4 appears, he attacks Goku thinking him to be in league with Fu. Seeing the two Goku fight, Fu comments on what interesting specimens they are and when Xeno Goku fires a ki blast at him, he effortlessly smacks it aside and then give Vegeta the Six-Star Dragon Ball. When Vegeta asks why he seems to know so much about the planet, Fu tells them all that it is because he is the one who created it.

Fu goes on to explain that he has gathered strong fighters from different timelines and has brought them here to fight each other and notes that Xeno Goku must have allowed himself to get captured so that he could investigate. He also says that Trunks has done the unforgivable by using the Time Machine so has brought him there as punishment and also as a means to draw in Goku and Vegeta as well. Finally he tells them that in order to escape they will need to gather the seven Dragon Balls which are held by different prisoners on the planet before he teleports away.

Having returned to his laboratory, he watches as the events unfold. Through a speaker, he warns Goku and Vegeta that they should not let their guard down as Cumber arrives to confront them, saying that his evil Ki snaps the mind of whoever it touches.

Fu continues to spectate on the battle, though he becomes angered when he notices giant cracks in the Prison Planet's barrier. He interrupts Ultra Instinct Goku's battle with Super Saiyan 4 Cumber to reprimand Cumber, activating his Super Fu state with a single slash of dark ki. Raising a purple blade of energy into the air, he absorbs the Power Ball Cumber used to transform. With another slash, Super Fu cuts Cumber's tail. Fu then drops out of his own transformation, letting the battle continue as he avoids a blast from Golden Cooler by teleporting back to his laboratory.

Universe Creation Saga
Still aiming for the creation of a new verse, Fu grows the Divine Tree, he plans to use it in combination with Toki-Toki's Clone- which holds enough power to create a new universe. Fu is first seen in a new laboratory, observing Goku's fight with Beerus from afar. As Dogidogi flies to his shoulder, he knowingly contemplates if Beerus was looking for Dogidogi (as opposed to Tokitoki, who Beerus mistakes Dogidogi for).

Fu arrives on Earth along with the bird Dogidogi, with Beerus asking if that is the actual "bird of catastrophe" to which Fu confirms that he is. Fu explains his plans to Goku, Beerus and the others and his intention of creating a new universe using the Universe Tree by attaching the energy of all other universes into the tree before disappearing once again through one of his rifts.

At the base of the Divine Tree, Fu, with Towa alongside him, greets greets Bojack, Turles, Super 17, Meta-Cooler and Dr. W and asks if they want to fulfill their dreams in his new upcoming Verse that he is attempting to create. Bojack however is distracted upon seeing the Saiyan Turles and the two begin fighting. Fu intervenes and stops the two, telling them that their target is Goku and his allies who will attempt to stop them and he has given them the chance to exact their revenge.

Shortly after while both Bojack and Turles are fighting Goku and Vegeta on Earth, Fu appears and voices how glad he is that he powered up his two allies. As they continue fighting, Fu has Dogidogi use his ability to freeze Goku and his allies in place before taking the opportunity to capture Tokitoki and then back a swift exit.

After Goku and his comrades arrive at the God Tree, Fu appears and welcomes everyone to the end of the verse. He suggests that they wait to see the birth of a new verse but suddenly, Xeno Goku, Xeno Vegeta, Hit, Zamasu and the Time Patroller are forcibly teleported away by Towa. After she claims that all of this is for Fu, which confuses him, she leaves along with Salsa and Putine, leaving only Goku, Vegeta and Fu behind.

Super Saiyan Blue Vegeta charges at Fu though he easily halts his momentum and unleashes some familiar dark Ki over Vegeta that he recognises as being from Cumber. Fu says that he is interested in Cumber's power as he is shown elsewhere unconscious in a tank with his energy being filtered. Goku tries to aid Vegeta but is too late as Vegeta is taken over and becomes Berserk. Fu repeats the process with Goku and the two enraged Saiyans flail wildly at Fu who easily fends them off before purifying them of their Evil Aura.

Fu turns and looks at the tree, saying that it will soon happen and they should watch as one Universe is destroyed and another birthed at the same time. With time running out, Goku and Vegeta fuse into Vegito. Fu fires a blast of Cumbers evil Ki at him but it fails to take Vegito over due to creating a Ki barrier around himself. Vegito transforms into Super Saiyan Blue and prepares to face Fu.

Fu finds himself outmatched against Vegito. Though he voices his lack of enjoyment for fighting he nevertheless continues after being spurred on by Vegito and taps once more into his Super Fu state. Fu proves to be able to hold his own better than before but is still no match for his opponent and is hit by a powerful Kamehameha. Then he elated to see that the God Tree is finally ready to birth a new verse. However his joy quickly fades when the tree suddenly begins to rot due to Beerus having used the Super Dragon Balls to have Super Shenron destroy it.

Towa and Mira show up, with the former giving her son the dark energy that she had extracted from the Time Patrol in order to grant him the position of the new Dark King. During the process, Fu's memories are returned to him and he quickly remembers that Towa is his mother. However he quickly dismisses her and begins to imbue the rotten Universe Tree with his power in order to restore it. Vegito tries to stop him and the two battle, now on more equal terms than before. However unexpectedly, Xeno Gogeta appears having been assisted by Demigra and punches Fu in the face to begin a new battle.

Power
Fu is able to easily deflect a ki blast from Super Saiyan 4 Xeno Goku Later, when Cumber began damaging the seal around the Prison Planet, Fu decided to intervene. He became Super Fu and absorbed Cumber's Power Ball into his sword and cut off Super Saiyan 4 Cumber's tail.

In the Univere Creation Saga, Fu was able to easily stop Super Saiyan Blue Vegeta's punch and later fended off both Super Saiyan Blue (Berserk) Goku and Vegeta, though their attacks had become wild and sloppy. Fu is uninterested in fighting Super Saiyan Blue Vegito based on Ultra Instinct Goku performance on the Prison Planet. However to Fu's shock, Vegito proves more than a match for Super Fu, prompting Fu to note that he's even stronger than Goku's silver form.

Techniques

 * Flight - The ability to take flight through the manipulation of ki.
 * Ki Blast - The most basic form of energy attacks.
 * Surprise Bullet - The Supe r Attack of Fu as a teenager.
 * Strongest sealing spell in history - A spell utilized by Fu to create the Prison Planet.


 * Time Cutter: Black Hole - While in his Super form, Fu uses his sword to create a black hole that absorbs an opponent's attack.
 * Double Sword Style: Time Cutter - Fu creates an energy blade to use alongside Time Cutter.
 * Surprise Blade - The user charges on the opponent and then buries him with a series of slashes. After that the enemy gets sent in the air with powerful blow and finished with a double slash from powered up sword.
 * Reversed phase wave - Fu can reverse the effects of Blutz Waves, causing them to mix and implode - thus resulting in the target Saiyan losing their Blutz Wave-induced form or power up. It can be used in conjunction with the Surprise Blade.
 * Concealment - Fu can become invisible and inaudible even to gods like the Supreme Kais as well as most mortals, though this ability has no effect on the Future Warrior who possess an unexplained ability to perceive his presence allowing them to both see and hear Fu when others cannot.
 * Sneaky Strike - Fu turns invisible to avoid detection, then emerges and performs a diving strike with his blade.
 * Confusion Blade - Fu perfor ms a horizontal slice with his blade, sending out dark fireballs that fling themselves at the opponent after a few seconds delay.
 * Energy Minefield - Fu tosse s out several energy mines that, upon contact, will electrocute the opponent with dark lightning.
 * Charged Ki Wave - The user uses some of their ki to regain stamina.
 * Full Power Energy Blast Volley - The user fires flurries of large, bright Ki Blasts that is more powerful than the average energy volley.
 * Serious Bomb - The user charges dark energy into their right palm and launches an energy uppercut then creates an large Energy Sphere which they then fire at the opponent. Connecting a solid hit with the uppercut makes it easier to hit the opponent with the following Energy Sphere though it is possible to fire the energy sphere and still miss the opponent.
 * Remote Serious Bomb - Fu draws his symbol with his sword in front of him and in the mid-air and touches it with the tip of the sword, upon being caught by an energy surrounding the opponent's body, they cannot transform. Then, whenever he wants Fu makes a red and purple sphere energy, identical to Mira's Serious Bomb, to appear over his opponent. Another Fu's symbol appears in front of him and upon touching with his hand, the sphere energy brutishly explodes.
 * Kiai - It is a technique where the user affects the air currents around him with ki to produce powerful shockwaves in order to strike the opponent.
 * Infinity Explosion - The user gathers energy which swirls around them before unleashing an infinite explosion of dark energy. By charging the technique the user can increases the size of the explosion.
 * Stone Spit - Fu gathers saliva in his mouth and spits it on his opponent, who then becomes lifeless stone.
 * Evil Flame - The user launches a large stream of fire from their mouth, bearing a large chance of hitting the opponent within range and dealing heavy damage.
 * Phantom Fist - When performing this technique faint purple energy swirls around the user's body and if the user is attacked the opponent will discover they were attacking an afterimage and the user will reappear in another location with their arms crossed. If successful the user will regain some stamina.
 * Super Back Jump - The user preforms a backwards somersault to avoid attacks or to put some distance between them and the opponent. Used in Xenoverse 2.
 * Energy Absorption - Fu is able to absorb energy from Time Rifts, causing the rifts to vanish. To do this he pulls out his sword and aims it up, drawing in the Time Rift's energy. According to Fu, he can absorb the energy of any history changes he makes which causes the changes to disappear though he can't absorb changes made by others unless he himself contributes to the alterations or at least plays some role in creating them either directly or indirectly.
 * Illusion - In his final fight against Vegito, Fu creates an illusion to act in his place to fight the Vegito so he does not have to and can escape.
 * Disguise - Fu is able to make himself appear as another person to whoever he wants. However, certain special people are unaffected allowing them to perceive Fu's true form while he is disguised to others. Additionally, even those unable to perceive Fu's true form can see, through Fu's disguise realizing he is not whom he is pretending to be and is an impostor.
 * Blutz Waves - An energy source emitted by large celestial bodies such as a full-moon when it reflects rays of sunlight. Fu can generate these waves to induce certain transformations in Saiyans that require Blutz Wave exposure.
 * Resurrection - It is the act of bringing someone back to life.
 * Dark Magic - A special magic to turn people into darker and more powerful versions of themselves.
 * Supervillain power-up granting - Fu can utilize his late mother's spell to grant targets the first stage Supervillain power-up.
 * Portal Opening - By slashing his sword, Fu is able to open space-time portals.
 * Surprise Storm - One of Fu's Super Attacks during the Universe Creation Saga.
 * Surprise Judgment - Dark King Fu's Super Attack.

Super Saiyan
Similar to his genetic father, Fu is able to achieve his "Super Fu" form: a Demon-Saiyan hybrid's version of the first, standard Super Saiyan form, although altered due to the Demon-Saiyan hybrid's demonic DNA.

Dark King
After being infused with the black elements/dark factors by Towa, Fu became the new Dark King.

Equipment

 * Time Cutter - Fu's short sword which he can also use to absorb energy.
 * Ki-Sealing Handcuff - Handcuffs used to weaken prisoners on the Prison Planet.
 * Power-Sealing Straitjacket - Straightjackets used to weaken prisoners on the Prison Planet.
 * Divine Tree - The God Tree is a infinite time-space sized tree that can be used to create an entire verse.
 * Big Gete Star - Used by Fu to save Cooler.