Soul Pirate
From Tardis Wiki, the free Doctor Who reference
The Soul Pirates were humanoids that would visit planets, such as Earth, that did not have hyperspace abilities. Even though they looked human, their body was made from parts of the beings they killed. Most Soul Pirates came from the planet Ryger. According to the databanks of the Soul Pirates, Time Lord brains were worth a lot of money. (PROSE: A Big Hand for the Doctor)
