the voices for the 2006 return of the cybermen were provided by nicholas briggs (who performed the voices for the cybermen in big finish audio stories as well as the daleks in both the new series and the audio stories). shown in the season 2 dvd special feature "confidential cut downs," the voice was created by processing brigg's voice through a voice modulator. the new cybermen have a blue light in their "mouths" which blinks in synchronisation with their speech.