Time Sprite
From Tardis Wiki, the free Doctor Who reference
Time Sprite was a fairy tale on Gallifrey, according to the First Doctor. The tale said they existed at the heart of the TARDIS.
When an experimental human timeship crashed into the Doctor's TARDIS, the dreams of the TARDIS crew and the human timeship crew contained an exact replica of a time sprite. (AUDIO: The Anachronauts)
