Peri (mythology)
From Tardis Wiki, the free Doctor Who reference
A peri was a kind of fairy in Persian mythology which started off evil before turning good. Recently regenerated, the temporarily deranged Sixth Doctor took this as sufficient to attempt to kill his companion, also named Peri. (TV: The Twin Dilemma)
Behind the scenes
- Before strangling Peri, the Doctor quotes from the poem "Paradise and the Peri" by Thomas Moore.