Douglas R. Docker: vocals, spoken voice (all albums and live 2008 - now)
Donald D. Docker: spoken voice on "The Mystic Technocracy - Season 1: The Age of Ignorance" (2012)
Göran Edman: vocals, spoken voice on "The Mystic Technocracy - Season 1: The Age of Ignorance" (2012)
Tony Mills: vocals on "The Mystic Technocracy - Season 1: The Age of Ignorance" (2012)
John Payne: vocals on "The Mystic Technocracy - Season 1: The Age of Ignorance" (2012)
Anna Petracca: vocals for live special events (2013)
Valentina Procopio: vocals on "The Heisenberg Diaries - Book A: Sounds of Future Past" (2016)
Andrea Rampa: vocals for live special events (2013)
Janthana Rodjakkhen: spoken voice on "The Mystic Technocracy - Season 1: The Age of Ignorance" (2012)
Elize Ryd: vocals on "The Heisenberg Diaries - Book A: Sounds of Future Past" (2016)
Amanda Somerville: vocals on "The Mystic Technocracy - Season 1: The Age of Ignorance" (2012) and vocals on "The Heisenberg Diaries - Book A: Sounds of Future Past" (2016)