Bloodfinger

Uncle  was a Shadey who, along with Woodscrape, escaped from their dimension to Earth, and sent playwright and poet Robert Greene forward in time to the 21st century and granted him their powers so they could use the hatred inside him to have the power to destroy the world. When they had discovered a Time Lord, the Ninth Doctor, had survived, they sent Greene back to 1592 to kill rival playwright William Shakespeare, so they could mess with time and really upset the Doctor. The Doctor and Rose Tyler convinced Greene not to let the Shadeys destroy the world, by promising that they would remember him saving it, and Greene cast them back to where they came from. (COMIC: A Groatsworth of Wit)