Rutan Host

The Rutan Host are a race of amorphous green blobs. They have only appeared so far in Horror of Fang Rock.

The Rutan host (singular Rutan) are shaped somewhat like a jellyfish, with a green, glowing body and many light-green tendrils. This tendrils have surprising strength and they can climb walls with them. Rutan hosts are amphibious and native to a cold planet (Ruta III). They have trouble dealing with climates unlike the ones on Ruta III, such as in hot environments. Rutan host can control and absorb electricity, which they can then use for defense and attack. Rutan speak in second person, which would imply a sort of hive mind. Rutan host can also shapeshift into other forms, but they need to know this form very well, usually after careful study.

The Rutan host have been at war with the Sontarans for many years, though they seem to be losing. Rutan spaceships are crystalline in structure and seem to be large, glowing orbs.