We'll start off with DBZ then work our way down

Goku
Goku/Kakarotto,is the second know Sai-jin to go Super Sai-jin.He ends up with two kids,Gohon and Goten.
and he also loves fighting.

Vegeta is the lone type who is very powerful and tough,he is the father of Trunks and the prince of planet Vegeta
he two loves fighting but does it in a destructive way unlike goku.

Gohon
The son of Goku and Chichi, he is a very mello dude(unless you piss him off) and doesn't show his ful potential because he lack the love of fighting.He has one daughter,pan and marries Videl.

TRUNKS

Trunks is the son of Bulma and Vegeta. Half Sai-jin and half human, just like Gohan and Goten. Trunks was surrounded by a scientific environment. Having his mother and grandfather as scientists, Trunks became very intelligent at science. In the future, Trunks and Goten were battling the androids, but they were too strong, Bulma had completed a time machine and sent Trunks back to help Gokou and Gohan fight. This is the story of Mirai (Future) Trunks, who is pictured right. Another version of Trunks is the small child version, Chibi Trunks. In most of the Dragonball Z series, Trunks and Goten fight side by side and they are in the Broly story and ''Fusion Form: Gokou and Vegeta'' movie as well. They are in others too. Trunks is famous for slicing Freeza in half this was Trunks' first appearance on the show. Of course, he is my 2nd favorite character on the show. He was also one of the stars in the third and final Dragon Ball series Dragon Ball GT (Dragon Ball Grand Tour). Dragon Ball GT was about the journey in outer space that Trunks, Pan, and Goku (who was wished to be a kid again) had traveled in search of the dark star dragon balls. In one hilarious episode Trunks is forced to dress up as a princess and marry some beast.