Dr Constantine was a physician at the Royal Hope Hospital in East London during the Blitz. He helped tend to a young boy named Jamie who was brought in, badly wounded by a falling bomb. The boy survived, miraculously, and Constantine studied him in Room 802 of the hospital. Soon, everyone who had come into contact with the boy fell into a coma and began to exhibit the same physical conditions as Jamie - even down to the gas mask which seemed fused to his head. Constantine stayed on alone at the hospital to care for those affected, but he too had caught the affliction. The Doctor saw him transform into a gas masked zombified being.
Later, Jamie called upon all the affected staff and patients of the hospital when the Doctor, Rose and Jack went to the Chula ambulance ship, whose nanogenes had caused his condition. Constantine had earlier indicated that Jamie's sister, Nancy, knew more about the boy than she was saying. She was, in fact, his mother. When the nanogenes recognised the relationship and worked out the correct genetic pattern, Constantine, Jamie and all the others were returned to normal.
Constantine had lost his family in the war, and he would have looked after Nancy and Jamie after the time-travellers had departed.
Played by: Richard Wilson. Appearances: The Empty Child / The Doctor Dances (2005).
- Wilson is best known for playing grumpy pensioner Victor Meldrew in the BBC sitcom One Foot In The Grave - catchphrase: "I don't believe it!".