There are two Trunks in the Dragonball world. One from the alternate timeline, future Trunks  and one from the actual timeline, young Trunks (Chibi Trunks). This profile focuses on the Trunks from the alternate future. In the alternate timeline, all of the Z team members were killed because of two destructive androids, except for Goku who never gets to fight because of a heart disease. The only survivors were Gohan and Trunks. Trunks is the son of Vegeta and Bulma. Gohan trained him to become stronger and to reach the level of Super Saiyan. One day the androids appeared and, Gohan confident that he can beat them, had enough of the destruction. By protecting the inexperienced Trunks, Gohan knocked him unconscious and fought them alone. Gohan is powerful, but is killed nevertheless. This makes Trunks very angry and he goes Super Saiyan and vows to one day avenge Gohan's death. Meanwhile Bulma builds a time machine for Trunks so he could go back in the past to find Son Goku. She believes that if he were alive, things would have been different.

Trunks comes to the past twenty years from the future in a effort to change history.  When he went back in time, he met Freeza, which was in the process of destroying the Earth, but Trunks turned into a Super Saiyan and killed Freeza and King Cold (Freeza's father) without effort. This amazed the Z Fighters while they watched, but they never knew his name or who he was because it might prevent Bulma and Vegeta from having Trunks. He talked to Goku about the Androids and gave him a medicine that will help him cure the heart disease that he is going to get. Much like his father, he is hard and aggressive. But unlike his father he is very polite and has values. He thinks in conventional ways and is very civilized when making decisions. While Trunks was young, he grew up in awe of the father he never knew. Trunks was always anxious about meeting his father. He was both impressed and disappointed once they met. During the battle of Cell however, Vegeta showed emotion upon seeing the death of his son.  Vegeta then screamed with passion and attacked Cell. The Z team revived him after Cell was defeated. He decided to return to his timeline once the danger was over. Trunks had trained in that time so much that his power surpassed the two androids in his time. When he returned to the future, he not only took with him the skills to defeat the androids but also the knowledge of the father he loved so much.