Jerome Fisher

 was a soldier in the Blue Fire Project. In the system he was given the designation Number 16. He arrived at the house with Number 12. He was blattodephobic. Due to an illusion by the Mi'en Kalarash he saw cockroaches everywhere in the house and he jumped out of a window. He out side the blue fire system helped the Seventh Doctor to defeat the Mi'en Kalarash. (AUDIO: House of Blue Fire)