Galyari

The Galyari were a species who had a deep fear of the Doctor. (BFA: The Sandman)

Biology
The Galyari were eight feet tall. (BFA: Dreamtime) They had extraordinary eyesight. However because of this, intense colour combinations such at the Doctor's coat, they found painful. In the past, they had a chameleon-like ability to blend in with their surroundings. (BFA: The Sandman)

Technology
They stored their knowledge in the "Shushkubra", memory eggs which were grown aboard the Clutch from discarded Galyari skins. (BFA: The Sandman)