Races

Humans

If you don't know what a human is you need a doctor.

Namekians

Namekians come from Namek they are a greenish colour and have the ability to grow their body parts back. Piccolo, Kami, Dende, and Nail are Namekians.

Sayians

Sayians are by far the strongest race seen in Dragon Ball. There home planet is Planet Vegeta. When they are born they are sent to planets to kill all on the planet so it can be sold. Sayians Have tails that with the sight of the full moon or a energy that can mimic it the turn in to a giant Monkey witch make their power level 10x what it is. There race was destroyed when Freeza blew up the planet. Goku(Kakkarot), Vegeta, Raditz, and Nappa are the only full sayians.

Androids

Androids are robots that if their power level can't be sensed and brought the destruction of city's in Trunks time line. Androids 1-21 in dbz were all created by Dr. Gero

Dragon

The Dragon In Dragon Ball is the Eternal dragon The only dragons in dbz are the eternal dragons and the 7 dragon are made in DBGT.