The Saibamen were little green foot soldiers that the Saiyans and/or Frieza's men utilize whenever they don’t want to get their hands dirty, so to speak. Basically resembling humanoid plants, the Saibamen are stored in seed form in a small vial. When the seeds are planted and a special solution poured over them, the Saibamen spring forth.
The creatures are simple-minded and violent, with little fighting skill- simply enough power to give their enemies trouble. Their key attack is the ability to spit waves of corrosive acid from their heads.
The Saibamen were called "Cultivars" in the English version of the Dragon Ball Z manga.