DRUMS
Stefano Aglì: drums live (2019-2020)
Salvatore Amato: drums live (2013)
Gregg Bissonette: drums on "The Mystic Technocracy - Season 1: The Age of Ignorance" (2012)
Carlo Cannarozzo: drums live (2019-2020)
Luca Caracciolo: drums live (2013)
Magnus Jacobson: drums on "The Mystic Technocracy - Season 1: The Age of Ignorance" (2012)
Helly: drums on "The Heisenberg Diaries - Book A: Sounds of Future Past" (2016) and live (2018)
Roxy Petrucci: drums on "The Heisenberg Diaries - Book A: Sounds of Future Past" (2016)
BASS
Douglas R. Docker: bass live (2019-2020)
Tony Franklin: bass on "The Mystic Technocracy - Season 1: The Age of Ignorance" (2012)
Anna Portalupi: bass live (2013) and on "The Heisenberg Diaries - Book A: Sounds of Future Past" (2016)
Celeste Veglia: bass live (2013)
GUITARS
Guthrie Govan: guitars on "The Mystic Technocracy - Season 1: The Age of Ignorance" (2012)
Yasi Hofer: guitars on "The Heisenberg Diaries - Book A: Sounds of Future Past" (2016)
Michael Infantino (Black Swan student special guest): guitars live (2013)
Mio Jäger: guitars on "The Heisenberg Diaries - Book A: Sounds of Future Past" (2016)
Gianluca Nardelotto: guitars live (2019-2020)
Davide Ronfetto: guitars live (2013)
Nita Strauss: guitars on "The Heisenberg Diaries - Book A: Sounds of Future Past" (2016)
Tony Urzì: guitars live (2019-2020)
Celeste Veglia (Black Swan student special guest): classical guitar live (2013)
Jeff Watson: guitars on "The Mystic Technocracy - Season 1: The Age of Ignorance" (2012)
KEYBOARDS
Douglas R. Docker: keyboards (all albums and events 2008 - present day)
Paolo Gambino: keyboards live (2019-2020)
OTHER INSTRUMENTS
Donald D. Docker: alto & tenor sax, clarinet on "The Mystic Technocracy - Season 1: The Age of Ignorance" (2012)
VOCALS
Cinzia Carraturo (Black Swan student special guest): lead and backing vocals live (2013)
Mattia Casabona: growl and scream vocals live (2020)
Eleonora Comba (Black Swan student special guest): lead and backing vocals live (2013)
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)
Kelly Massenz (Black Swan student special guest): lead and backing vocals live (2013)
Giacomo Mazzaro (Black Swan student special guest): backing vocals live (2013)
Tony Mills: vocals on "The Mystic Technocracy - Season 1: The Age of Ignorance" (2012)
Lucia Partiti (Black Swan student special guest): backing vocals live (2013)
John Payne: vocals on "The Mystic Technocracy - Season 1: The Age of Ignorance" (2012)
Anna Petracca: vocals live (2013, 2019-2020)
Valentina Procopio: vocals on "The Heisenberg Diaries - Book A: Sounds of Future Past" (2016), live (2018)
Andrea Rampa: vocals live (2013, 2019-2020)
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)
Jessica Scardina: vocals live (2019-2020)
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)