Nustanu (Devil in the Mist)
From Tardis Wiki, the free Doctor Who reference
Nustanu was a creature who could become a mist. He was the last of his species and the last one to surrender. He became loose after the power failed. He wanted to use Vislor Turlough as a hostage. He died in the crash. He was sick when he was captured and manipulated the prison ship (AUDIO: Devil in the Mist)
