Should not take precedence over Mark Seven (The Destroyers)
Talk about it here.
Mark Seven was an android soldier. He, Reb Shavron and Joel Shaw were the original members of the Anti-Dalek Force. Shaw was the commander, and Seven and Shavron were his seconds-in-command. The other two did not know Seven was an android until after completing their first mission, during which he appeared to die. (PROSE: Terror Task Force)