Creevix

The Creevix were an insectoid species native to the "next universe along" to the Doctor's. They were the masters of time in their universe. They erased Time Agent Guy Taylor from existence, enabling them to devour the universe in 2013. However, the Eleventh Doctor sent messages to his previous selves, enabling Guy Taylor to be saved and the Creevix to be defeated. (AUDIO: The Time Machine)