Trunks

"Hurts, doesn't it? Being completely outmatched, no way out. Imagine how all the innocent people you've hunted for years have felt. Always hiding. Always on edge. Fearing tomorrow. Imagine how it was for Krillin, for Piccolo, for Yamcha, Tien, imagine how it was for Gohan. You killed them all without a second thought. You've made life a living hell for everyone because no one could stand up to you. You've been in power too long. Well, your time ran out today. Now you're in the fire, so you'd better enjoy it! "

Time traveler going back to the past using his mother Bulma's time machine to change the future, he fights Goku Black in Dragon Ball Super. Androids 17 and 18 of that alternate timeline, murdered the Dragon Team and proceeded to create apocalyptic hell on Earth. Trunks is trained by Future Gohan as a teenager and becomes a gifted fighter, swordsman and a Super Saiyan, which are traits that aid him greatly in the battle against the Androids after traveling back in time in order to save his own future. He is Goten's best friend in this timeline. By the end of The Hell Saga, he is married to Mai whose pregnant and elected as president of the Capsule Corp.

Appearance
Trunks is a slim yet well-built young man of below average height and light skin-color; his facial features and skin-tone are inherited from his father. He has blue eyes, and hair colored either lavender, purple or blue depending on the media, that is soft and straight that parts from the top of his head to frame both sides of his face reaching his ears with two loose strands over his forehead; traits he inherited from his mother. In his childhood, his hair parted at his right temple with strands hanging out and the top of his head sweeping to the left. As a teenager on, his hairline parted at the center of his head. He is usually seen wearing an indigo jacket reaching his abdomen with the Capsule Corporation logo on the left sleeve, a black tank-top, dark gray pants with a white belt, golden boots, and a computerized watch. His primary weapon is the Brave Sword. Passed down from his mother, he changes his appearance throughout Dragon Ball Z Kai. After the start of Dragon Ball GT, he wears a black long-sleeved shirt with a blue bandana, brown leather gloves, a light tan blazer, white baggy short slacks, and now he wear brown boots. During the events of Baby Saga, where Baby possessed him until the events of the Shadow Dragon Saga, he is not seen wearing his light tan blazer. His hair is now purple instead of lavender.

Personality
Depending on the timeline, he is either cocky, spoiled or serious (in the alternate future).

Background
In Dragon Ball Z: The History of Trunks, Trunks was born in Age 766. An alternate timeline, one in which the Earth had been continuously terrorized by the evil Android 17 and Android 18, over three fourths of the world's population has been eliminated due to their spree of destruction. In this future, Gohan, Trunks, and the others are weaker versions of themselves without the strongest Z Fighters alive (The SSJ Alliance).

In this timeline, Goku dies of a heart virus six months before the Androids arrive, leaving the Z Fighters without one of their greatest heroes. All of the other Z Fighters (except Future Gohan) are killed, with the Androids easily outclassing them in power since they were both built to be more powerful than Goku. The Z Fighters are unable to be wished back to life as the Dragon Balls are permanently useless, due to Piccolo's death, which also kills Kami. Over the course of the next thirteen years, Gohan becomes Future Trunks' mentor and trains him in everything he knows, also teaching him swordsmanship. Gohan tries his best to teach Trunks how to become a Super Saiyan as well, necessary for him to compete against the Androids' might. However, with everyone already dead and having not yet felt a certain level of sadness and sorrow, Trunks simply cannot find the motivation to transform (in the manga, Trunks had already achieved the Super Saiyan form at this time).

Trunks is at age 14 at the time. In an amusement park named Super World, Gohan and Trunks face the Androids in battle where Trunks, in his inexperience, is cornered by Android 18. Gohan is forced to sacrifice himself to save Future Trunks, losing his arm in the process which only further demoralizes Trunks and causes his confidence to fall. Trunks tries repeatedly to attain Super Saiyan during training but still struggles with it, unlike his alternate-timeline self who attains it at a much younger age and with relative ease.

Later in Age 780, the pair are drawn into battle against the Androids again, so Gohan knocks Trunks unconscious knowing that if he faces them again he will be killed. Gohan holds his own against the Androids at Pepper Town, being stronger than each individually (only in the anime; Gohan initially lost against Android 17 who was using less than half his full strength, and even after the years of training with Trunks, he is effortlessly defeated by the foe and killed before Trunks awakens) but unable to compete with both of them and their infinite energy reserves. Gohan is defeated and killed, leaving Trunks to find his body lying in the rain. Overcome with anger and grief, Trunks finally transforms into a Super Saiyan (in the manga, he was able to transform already, but due to his inexperience was unable to even keep up with an arm-less Gohan in his normal state, until his training for the next three years) and spends the next few years training to avenge his fallen allies, though he still struggles to defeat them.

After another close escape at Bridgetown in Age 783, Future Bulma reveals her Time Machine to her son, which she hopes he will use to return to the past and save Goku, hopefully altering the future. In this future, Trunks did not know his father at all, as he was only an infant at the time he was murdered by the Androids.

Dragon Ball Z Kai
Goku uses his Instant Transmission to sneak Trunks into Bulma's bedroom where she is to do the deed with Vegeta.

Strawberry Saga
In Age 784, Trunks travels back in time 20 years, in order to warn his father about the android threat in the near future, as well as to deliver medication that will cure Goku of the heart virus that he is supposed to die from. However, upon arrival he is greeted by Frieza with his father King Cold, and he kills all the soldiers Frieza and his father had brought to Earth. They had come to Earth in order to seek revenge upon Goku's loved ones, and to kill Goku himself. Trunks, then seventeen years old, did not look like much of a threat to Frieza, and he freely told him so. Trunks implies his ability to transform into a Super Saiyan, but Frieza, albeit initially shocked, laughs it off along with his father. Trunks, anticipating that Frieza does not believe him, proves it by transforming, to Frieza's horror. Frieza was then given three opportunities to kill Future Trunks, but the young Super Saiyan is able to block and dodge the attacks with ease.

Frustrated, Frieza fires a Supernova at Trunks. Trunks just catches the attack and tells Frieza that he must have "dropped it," after which Frieza detonates the blast with an Energy Wave (only in the anime, while in the manga Frieza never tried a planet-busting ki attack, and fired this blast immediately instead). Future Trunks then easily remains unscathed and performs what he calls the Burning Attack to have Frieza dodge the blast, which is followed up by his Shining Sword Attack.

Frieza, cut in half, was defeated by having his body hacked to pieces and Future Trunks then followed up with an energy blast, and was soon followed by his arrogant father King Cold, who was killed by a God Breaker. Trunks then guides the Dragon Team congregated nearby to the place where Goku is going to land, and they all for Goku to arrive. He offers the Z Fighters a drink from his capsule cooler. Tien speculates that he must have met Goku during the latter's trip in outer space, although the theory is shot down when Chiaotzu reminds them that Trunks said he never actually met Goku before. After two hours, upon looking at his watch, Trunks informs the Z Fighters that Goku's ship is about to land.

When Goku arrives, Trunks finds out to his chagrin that he interfered with the timeline unnecessarily; although he was several hours away by space pod, Goku was prepared to step in using his Instant Transmission technique (just as he did in Trunks' original timeline) when Trunks showed up and killed Frieza. Trunks then informs Goku of the future where the Androids arrive and kill all of the Z Fighters in a large battle, also telling Goku not to inform anyone about his parents. However, Piccolo's sensitive Namekian ears pick up the conversation, and while he doesn't reveal any information about Trunks, Piccolo tells the Z Fighters of the future, inspiring the heroes to train their hardest for the next three years. However inadvertently, Trunks' revelation of the future alters it slightly.

Heaven or Hell
Always winning against his rival best friend Goten, Trunks always tried to beat him.

Power
When the Z Fighters first encountered him, his power level was mysteriously as high as Goku's.

Abilities
He didn't start out as the most powerful until he obtained his Brave Sword given to him by Tapion, the weapon he used from then on.

Gohan
Mentor in the future.

Goten
Heterosexual life partners, he knew Goten since the day he was born.

Goku
Trunks initially didn't like him very much which changes later on considering him his close friend in GT.

Mai
He is reunited with her in GT. She wishes to be his age again after Trunks expresses his unconditional love for her that age doesn't matter to him.

Pan
Like Goku, Trunks considers Pan a close friend.