Shakri (The Power of Three)

The "Shakri" was an automated system on the Shakri ship, described by the Eleventh Doctor as a "propaganda poster". He told the Eleventh Doctor that the Shakri lived in "all of time and none" and that they served the Tally. He also told the Doctor that they would send a second wave of cubes to Earth after the first wave had put a third of the population into cardiac arrest. (TV: The Power of Three)