Goten:

One of the most kind hearted Z fighter. He is the youngest super sayin in DragonBall Z and GT.He is best friends with Trunks. He can fuse with Trunks to form the powerful Gotenks

Trunks:

The second youngest super sayin in DragonBall Z and GT. He is the son of Vegeta, he was suprised when Trunks first became a super sayin in the gravity room. He can fuse with Goten to form Gotenks

Piccolo:

A powerful Namek that fused with 2 people Nail and Kame. When Gohan was young Piccolo trained him.

Krillen:

Krillen is Goku's best friend. They knew each other ever since they were kids. Krillen is a very good martial artist, but compared to the other Z fighters he's a wimp.

Videl:

Videl is Gohan's girlfriend, she's Mr.Satan[Hercule]'s daughter her power level is very low but Gohan trains her and teaches her how to fly. After Buu was destroyed Videl became The Great Saiyaman #2 to fight crime in the city. Later in DragonBall Z and early DragonBall GT they have a daughter named Pan.

Vegetto:

Bad Guys

Android 17:

Android 17 is Android 18's brother, he was created by the mad scientist Dr.Gero. In Future Trunk's time he and his sister killed Piccolo, Krillen, Vegeta, Gohan, Yamcha, and Tien.

Super Android 17:

Super Android 17 is a fused form of Android 17 who was recreated by Dr. Gero and Artifical 17 that was created by Dr. Myuu[the creater of Bebi].

Babidi:

Babidi is the son of the creater of Majin Buu, but like his father Bibidi was killed, but Bibidi was killed by Buu and Babidi was killed by Piccolo.

Bebi:

Bebi was created by Dr. Myuu he was desinened to go inside any body and take over it adds Bebi's power to whoever it posseses Goku turns into a Super Saiyjin 4 when fighting Bebi-Vegeta.

Cell:

A very powerful android that was created by Dr. Gero and killed Goku by self-destructed then he regenerated. After a long fight Gohan destroyed Cell with a Kamehameha wave.

Cell Jr.:

The Cell Juniors are very powerful, created by Cell they were ment to destroy the Z fighters but as usual SSJ2 Gohan.

Majin Buu:

A fat infint-like retart that eats people by turning them into a cookie, cheese, chocolate, or jelly. Majin Buu transforms every time he eats a powerful person such as Gotenks or Mystic Gohan, his forms are Evil Buu, and Super Buu. Buu was killed by Super Saiyjin 2 Goku.