Sentreal's species

Sentreal's species are a sapient extra-galactic race, regarded in the 40th century as one of the great powers of the outer galaxies. In the year 4000, a representative of this species became one of several allies of the Daleks in their planned invasion of the Milky Way.

Sentreal appears to be the name of their planet as well as their representative.

Biology
Members of this species are tall creatures described as combining traits of plants and animals. They look vaguely like mobile trees with a couple of burning bright eyes, and reproduce with seeds. While their cone-like body segments appear somewhat comical, they are capable of spinning at high speeds and killing others.

Appearances

 * Doctor Who, season 3, "Mission to the Unknown" (1965)