Cell Jr. Enemies

Son Gohan is a Saiyan/Human hybrid and the first son of ChiChi and Son Goku.

Goku is one of the last members of the Saiyan race, sent to Earth as a baby and raised among humans. As a powerful martial artist, he defends Earth against the aliens who come to destroy it.

Assistant to the Guardian of the Earth.

Piccolo is a Namekian warrior on Earth and one of the Z-Fighters. Born from the Demon King Piccolo to kill Goku, he would join him as one of his strongest allies.

Trained by Master Roshi's rival, the Crane Hermit (Tsuru Senin). Tien Shinhan is widely known as the strongest human in Dragon Ball Z, though Akira Toriyama has stated he is a descendant of alien Tri-Cylops.

Vegeta is the prince of the Saiyan race, he is one of the most powerful characters in the Dragon Ball Z universe.

Yamcha is one of the most powerful human warriors in the DBZ universe.