Up - Small Trunks
of small Trunks Growing Up.
father, Vegeta, got to live, Trunks grew up normally and got extra hard
training, which made him a much stronger fighter than Goten.
Being a little brat that he is, Trunks is always looking for mischieve.
He constantly wants adventure and tries to sneak in places he isn't
supposed to. Although he has all these traits, he does have incredible
power, which makes him one of the strongest fighters in the universe.
He got to fight against Buu.
Book Twenty Eight to Book Thirty Five
During Cell's threat, Bulma kept dragging around baby Trunks. She almost
got killed with him once, but was rescued by the future Trunks. He became
a super Saiya-jin at an early age as well.
Small Boy Period
Book Thirty Six to Book Forty Two
We see Trunks show his true power in this period, which he shows off
an amazing display of both power and speed. His father Vegeta trained
him constantly like this, to get back at Goku's son, Goten. Even against
Majin Buu, Trunks showed no fear.
From Book Thirty Six On
At an early age of eight, Trunks learned how to go super Saiya-jin.
Most of it was due to the training of Vegeta, which he spent a lot of
time in a gravity room, where there was over 400 times the normal gravity.
From Book Forty On
From the threat of Majin Buu, Goten and Trunks both trained to fuse
together and become the all powerful, Gotenks. They got to train even
more with this fusion, in the Room of Spirit and Time. When Buu came
to see him, he showed that he would be absolutly, no push over.
10 Year Growth
Book Forty Two
After the threat of Majin Buu was over, Trunks continued to train harder
then ever. Just like the Trunks we saw in the Cell saga, this Trunks
looks just like him, but just as powerful. Vegeta makes him train every
day, just so he can get stronger than Goten.