The Kallidahin were a sentient species of humanoids that lacked facial features. Although they originated on Kallidah, they also established their presence in the asteroid field of Polis Massa, and they came to be known as Polis Massans. Kallidahin were typically silent, communicating only through telepathy. The species lacked facial mouths or noses, but they could still speak and breathe. One Kallidahin was the curator Utani Xane, but was killed by Darth Vader during the theft of the Triple-Zero protocol personality matrix. The Kallidahins on Polis Massa attempted to save Padmé Amidala when she died delivering Luke and Leia.