History
The Borers are a race of creatures that are native to the Negative Zone. The origin of their species are unknown, but as these creatures can bore through anything they have are often used by Annihilus, ruler of the Negative Zone, against his enemies. The first time these creatures have been seen was when the Fantastic Four ventured into the Negative Zone to retrieve the Cosmic Control Rod of Annihilus, the only thing that could save the Invisible Girl and her unborn son during the process of childbirth. When they succeeded in recovering the Cosmic Control Rod, Annihilus unleashed these beasts against his foes, but the FF managed to escape. Reed later relinquished the Cosmic Control Rod back to Annihilus after siphoning the required energies from it in order to save the life of his wife.[1]
Annihilus unleashed the Borers against the Fantastic Four the next time they encroached in his realm while trying to prevent Doctor Doom from stealing the Cosmic Control Rod. When they learned Doom succeeded, they fought off the Borers, rescued their ally Rick Jones and returned to Earth.[2]
A number of Borers were transported to Earth by the techno-wizard known as Yandroth. They were handled by the Fantastic Four before being returned where they belonged following Yandroth's defeat at the hands of the Defenders.[3]