At least seven years after the Cell Games, Future Trunks returns to the past and finds his Childhood self. They then have a battle. Kid Trunks transforms into a Super Saiyan. Future Trunks is amazed at such a young warrior transforming into a Super Saiyan (mainly due to Kid Trunks having nothing to motivate him to become one in a peaceful time). Future Trunks then transforms into a Super Saiyan too and eventually wins. He later returns to his time after telling his child self to train with his father.
- Future Trunks (Base, Super Saiyan) vs. Kid Trunks (Base, Super Saiyan)
- Future Trunks (Base, Super Saiyan)
- Kid Trunks (Base, Super Saiyan)
- Vegeta (Mentioned)
- Kid Trunks is unaware of who Future Trunks actually is, even after their battle, however, in Dragon Ball Z: Shin Budokai, he is fully aware of who he is, as Vegeta told him.