Delta 50

Designated Ood Delta 50 was an enslaved Ood living during the time before the freeing of the Ood. It was left to die, buried in snow on the Ood Sphere. The Doctor and Donna Noble found it and tried to save it. It said "the circle must be broken", caught Red Eye and instantly died. Delta 50 was the first breadcrumb toward the Doctor and Donna discovering Klineman Halpens plot to enslave the Ood forever.