You may be looking for Mal'akh or Malakh XXIII.

The Malakh were a race, organised into the Malakh Empire, who were at war with the Uvodni. 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)

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