This is the Available Character list. The names in white are characters that are still available and the ones in blue are taken.
Saiyans/Half Saiyans
Goku / Kakarot
Goten
Gohan
Vegeta
Raditz
Brolly
Trunks
Pan
King Vegeta
Bardock
Turles
Nappa
Tarble
Phasha
Tora
Namekians
Piccolo
Nail
Lord Slug
King Piccolo
Dende
Humans
Chiaotzu
Hercule
Kid Lee
King Chapa
Krillin
Mighty Mask
Nam
Olibu
Spopovich
Tien
General Tao
Uub
Videl
Yamcha
Yamu
Androids
Android 8
Android 13
Android 14
Android 15
Android 16
Android 17
Android 18
Android 19
Doctor Gero
Cell
Changelings
Frieza
Cooler
King Cold