Dymova
From Tardis Wiki, the free Doctor Who reference
The Dymova were native to Dymok. The Fifth Doctor and his companions, Adric, Tegan and Nyssa, once helped the Dymova disrupt the Celestial Toymaker's link with Rallon, allowing Rallon to expel the Toymaker from his body by triggering all twelve of his regenerations at once. (PROSE: Divided Loyalties)