Delta Fifty
From Tardis Wiki, the free Doctor Who reference
Ood Delta Fifty was an Ood who caught the Red-eye on the Ood Sphere in 4126. He killed his master, Mr Bartle, with his translation sphere. He tried to make a run for it, but one of the Ood Operations guards shot him. The Tenth Doctor and Donna Noble found him lying in the snow outside the facility. As Donna comforts him, Delta Fifty only states, “The circle must be broken”, before reverting back to red-eye and lunging at the Doctor and Donna. He succumbs to his injuries a few seconds later. (TV: Planet of the Ood)