Creet

Creet was a young human boy who grew up on the planet of Utopia he was scared of the evil Futurekind and met Martha Jones. The Doctor made the TARDIS only be able to travel to and from its previous destination, when the Master took it and turned it into a Paradox machine. The Master travelled to Utopia, picked up the human race, turning them all into small green heads. The Master put them in small hovering mind-control devises and called them Toclophane. He took them back to 2008 where they attempted to kill off the human race. Creet was shot by the freedom-fighter, Tom Linnagin when laughing at the humans primitive ways. When the Paradox machine was destroyed, history was rewritten, Creet lived his life normally, never knowing that he once was a mind-controlled killing machine.