Quagreeg (species)

From Tardis Wiki, the free Doctor Who reference

Quagreegs were a serpentine hive mind species from the planet Quagreeg. Quagreegs spoke Quagreegian, and were very mentally and technologically advanced.

Sepulchre was a Quagreeg who captured humans from different time periods of London's history and trapped them in his mind. (AUDIO: Dead London)