The Sound Architect was fortunate enough to try out Dehumaniser from Orfeas Boteas at Krotos Ltd.
The concept of Dehumaniser is a real time voice changing software that will enable to use either presets or your own settings to create a monstrous voice while recording voice or after it is recorded.
Sam Hughes has a little play and gives his opinion here: Dehumaniser Review
Includes an interview with creator Orfeas Boteas!
The Sound Architect