Ralph Hellcombe (Dalek duplicate)
From Tardis Wiki, the free Doctor Who reference
A duplicate of Ralph Hellcombe was created by the Daleks in order to manipulate his father Lord Hellcombe for the Dalek Project. He was ordered to kill Lord Hellcombe but his father was dying and was chased by "Ralph" in a plane. The Eleventh Doctor told him to fight his conditioning as he rammed his plane into a Dalek saucer, killing himself. (COMIC: The Dalek Project)