Zangya: Zangya's past is never revealed, although we know she's one of Bojack's henchmen. Zanga easily defeats Krillin and is killed by Bojack after Gohan kills Bido and Bujin.

Zarbon: Zarbon was Frieza's right hand man. He is very strong for the time period he was alive and has the ability to transform into a hideous monster when overpowered. He was easily defeated by Vegeta since he didn't know about the Saiyan gene used to gain strength after every battle.

Zeshin: Zeshin is one of the leaders of the orphans on board the stealth like spaceship that Krillin and the others accidentally board on their way to Namek.

Zorudo: Henchman of Garlic Jr., Zorudo is farily weak and is killed when he angers Gohan.

Zunama: Zunama, a giant eel like alien, causes earthquakes when he shakes his antennas. He threatens the people of a small village by telling them that if they don't do as he commands, he will create an earthquake. He eventually orders the marriage of he and Lenne. When Goku and the others learn of his existence and foul actions, Trunks pretends to be a girl to replace Lenne. The plan is to cut off Zunama's antennas when he least expects it. It is later learned that Zunama can only predict earthquakes with his antennas and not cause them. Apologizing for all the trouble he caused, Zunama ends up helping the people of the planet, predicting earthquakes to warn villagers to take cover.