Tractators were a species that resembled giant invertebrates. They could control gravity. Themselves mindless, they required the Gravis to act intelligently.
Tractators
The Fifteenth Doctor
for The Fifteenth Doctor in Pairing The Doctors of The Revival with Monsters/Villains of The classic era
Suggested by jedahdohma
I'm pairing The Doctors of The Revival with the monsters and villains of the classic era
