Blontt
Blontt was a green, creature and one of the aliens that lived on Maught who entered into a fragile ‘partnership’ with Angelo and Tu – with each of the three having one of the necessary co-ordinates to drill down into a long lost underground stream. He obtained the depth co-ordinates (42.2) but was shot by Angelo for his betrayal of the partnership by attempting to go freelance. Before he died he gave the depth co-ordinates to the Tenth Doctor. By drilling too deep with false co-ordinates given by the Doctor, the underground stream was exposed and allowed water to flow across the planets surface once more. (DWA: The Green, the Bad and the Ugly)