Michael Green

Corporal Michael C. Green was a Scottish-born human soldier in the service of the United Nations Armed Forces during the 31st century. He fought in the Third World War, notably participating in the battles of New York, London, Mexico City, and Moscow, among many others.

In the final battle of World War III, during the Defense of Moscow, Michael was attached to U.N. Secretary-General's Alexander York's personal guard, and encountered the Twelfth Doctor, Clara Oswald, and Captain Jack Harkness, who were investigating a mysterious plot by the Daleks of the Cult of Skaro to use Alexander York's genius to terraform their planet Skaro. Michael was able to help the Doctor and his companions rescue Dr. York and defeat the Cult of Skaro. Michael would join the TARDIS crew as one of the Doctor's companions.

Following the defeat of the New Dalek Paradigm, Michael decided to leave the TARDIS crew and offer his services to UNIT, not wishing to permanently abandon his military history, still having a great respect for them. Despite leaving the TARDIS crew, he maintained regular contact with the Doctor.