Balhoonian

Balhoonians were the native species on the planet Balhoon. In appearance, Balhoonians had razor-sharp teeth, blue skin, a high-pitched voice, short snouts. Balhoonians could also sweat dangerous glaxic acid if their body fluids are not renewed. (TV: The End of the World)

Behind the scenes

 * Russell T Davies' original concept for the Shadow Proclamation scene in The Stolen Earth included an appearance by a pair of Balhoonians, refering perhaps jokingly to the Moxx of Balhoon and a brother named Jixx, but his plans to feature a "rogues gallery" of alien races in the scene fell through; ultimately the Judoon were the only returning race featured. (REF: The Writer's Tale)

Balhooniano