Malakh Empire

You may be looking for Malakh Imperium or Malakh XXIII.

The Malakh Empire fought the Uvodni Empire in a war which Sarah Jane Smith, who was familiar with the easily-provoked Malakh, recognised as being a part of "the Ghost Wars of the Horsehead Nebula". (TV: Warriors of Kudlak) The Ghost Wars were a Change War in constant temporal flux; the Corsair thought of them as opposing the vampiric "Malakh Imperium" to "basically everyone else in and around the Horsehead Nebula". (PROSE: The Bloodletters)

The two races fought the Ghost Wars against each other, the Uvodni backed by an alliance of other races who were later crushed. Because of this, the Uvodni started abducting human children from Earth and using them as soldiers. The two races eventually declared a truce and the war ended in the late 1990s. The Malakh were known to Sarah Jane Smith, who considered them to be easily provoked. (TV: Warriors of Kudlak)