Ant (Set Piece)
From Tardis Wiki, the free Doctor Who reference
Ants were a race of ant-like robots. The Seventh Doctor encountered them in the 30th century, Ace met them in Egypt and Benny came face-to-face with them post-Revolutionary France.
They used their pincers and claws when attacking. Their antennae could pick up command signals. They also had spines running along their arms for protection. They were intelligent scavengers linked in some way to the Ship. They were attracted to space-time rifts, and had the Doctor tortured in order to gain information. (PROSE: Set Piece)