they dont have last names, in dbz ssj4. everyone has only a first name, so their fist names are the same.
Gogeta is Goku+Vegeta and Vegito is probably from Vegeta+Kakarrot(which is goku's saiyan name).Hope i answered ur question :D
Bardock, King Vegeta, Goku/Kakarot, Raditz, Nappa, Vegeta, Gohan, Goten, Pan, and Trunks.
Planet Earth lol
the name vegito is formed because the Japanese names will be vegita of vegeta and kakaroto of goku so when they fuse they become vegito.[vegi] of vegita and [to] of kakaroto.
goku, vegeta, brolly, brolly's dad, turles, and vegeta's brother
Vegeta calls Goku "Kakkarot" because that was his name on (SPOILER ALERT!!!) the Saiyan planet, before he came to Earth.
Vegeto was formed when Goku and Vegeta put one earing on an opposite ear. They can also turn into Gogeta, it just depends on which ear the earring is on.
the go in goku
Goku doesn't have a daughter. Only sons. If you're referring to Gohan's daughter, her name is Pan. If you're thinking of Gohan's wife, her name is Videl. If you're thinking of Vegeta, however, he does have a daughter. Her name is Bra(Bulla in English).
goku's last name is son but in japan last name is said first (example: Son Goku,Son Gohan)
I think that the episode trunks show when he was a baby was episode 150 - 170.they first show trunks with sword and new born baby trunks in the episode when goku finally returns from the planet namek :)
Vegeta has no last name. He is simply known as Vegeta.