Danny Boy (Victory of the Daleks)

"Danny Boy" was the call sign of a spitfire pilot who fought in World War II.

Biography
This Spitfire pilot once assisted the Doctor to attack a Dalek saucer. His primary mission was to disable the device on the ship that was was artificially illuminating London during a night of the London Blitz. His Bracewell-modified Spitfire, which had a Gravity Bubble around it for space travel, was also given laser guns able to damage Dalek technology.

"Danny Boy" led two other Spitfires in the attack on the Dalek ship, both of whom were destroyed, their pilots dead, in the assault. He managed to destroy the dish emitting the pulse, in large part due to the Doctor's efforts to disable the ship's shields. After successfully completing his primary mission, the Doctor ordered him to proceed to destroy the Dalek ship. However, the Doctor reversed these orders, when the Daleks threatened to destroy the Earth. "Danny Boy" then returned to Earth. (DW: Victory of the Daleks)

"Danny Boy" was later summoned by the Doctor to help him in his mission to rescue Amy Pond and her baby. "Danny Boy" was part of a squad of at least two Spitfires which destroyed Demons Run's communications array. After his objective was complete, "Danny Boy" and his comrade(s) were returned to their own time. (DW: A Good Man Goes to War)