Specimen 6 (Earth-5875)

"No, Dr. Groves, I want it alive. I like this one."

- - Karl Bishop Weyland to Dr. Howard Groves

Specimen 6, also known as Number Six or simply Six, was a xenomorph Aggressor bred by the Office of Naval Intelligence's scientist Howard Groves on the human Outer colony Terra Nova. Unusually intelligent, even for a xenomorph, she was the first of her species to escape from her containment by ONI and release her kin, including a Keymind, leading to a large-scale outbreak on the planet.