Tendril

Scaroth in his undisguised form, the tendrils covering him visible. (TV: City of Death)

A tendril was a part of an animal or plant. It resembled a small tentacle.

The Animus that the First Doctor met beneath Victorian London was able to regrow to its former self from a single tendril. (COMIC: Unnatural Selection)

Krynoids travelled through space as tendrils in small pods, always in pairs. (TV: The Seeds of Doom)

Jagaroth were lumpy humanoids with green, veined skin covered in small tendrils. They had a single eye on their forehead and a large flap on either side of their face. (TV: City of Death)

The Gelsandorans were distinguished by a set of five wire-thin silver tendrils that protruded from their foreheads. (PROSE: The Ultimate Treasure)

Kyropites were parasitic plants native to YT45. They emitted a soporific gas that put nearby fauna in a dreamlike state. The kyropites would then feed telepathically on the alpha waves produced. If close enough, the plants would extend tendrils and also consume the fauna physically. (AUDIO: The Mind's Eye)

The Kith were a highly-evolved, sponge-like, myconid race with tendrils in the place of arms. (AUDIO: Max Warp)

Behind the scenes

• The Multi-form known as Prisoner Zero, who served as the monster in TV: The Eleventh Hour, was referred to as the "Face Tendril" by Matt Smith and Karen Gillan before the episode's broadcast, and is also referred to as such in the Doctor Who: Monster Invasion trading card game.