Cyborg Zebesians are enhanced, partially or entirely metal-plated Zebesians. They were the result of Galactic Federation scientists on the BOTTLE SHIP trying to create a special forces unit based on the Space Pirates. The Zebesian type were to form the core of this unit. The scientists had presumably captured Pirates and experimented on them in order to create successful bioweapons. The synthetic implants made by the Federation are quite crude compared to those created by the Pirates themselves (seen on various Pirate classes encountered throughout the Metroid Prime Trilogy).