- Steven Luotto
- dialogue coach (as Steve Luotto) / dialogue coach
- Sheila Paige
- acting coach
- Elayne Stein
- speech coach
- Ferruccio Amendola
- voice dubbing: Norman Bowler (uncredited)
- Antonella Baldini
- voice dubbing: Beatrice Palme (uncredited)
- Cesare Barbetti
- voice dubbing: Robert Vaughn (uncredited)
- Lorenza Biella
- voice dubbing: Carolyne Jacobs (uncredited)
- Giorgio Borghetti
- voice dubbing: Ross Hill (uncredited)
- Luciano De Ambrosis
- voice dubbing: Cyrus Elias (uncredited)
- Sergio Fiorentini
- voice dubbing: Donald Hodson (uncredited)
- Michele Gammino
- voice dubbing: Terence Hill (uncredited)
- Giorgio Lopez
- voice dubbing: Cole S. McKay (uncredited)
- Fabrizio Manfredi
- voice dubbing: Matthew Uriarte (uncredited)
- Mario Mastria
- voice dubbing: Luigi Bonos (uncredited)
- Renato Mori
- voice dubbing: Joe Krieg (uncredited)
- Michael Parkhurst
- marketing consultant (uncredited) / technical advisor (uncredited)
- Isabella Pasanisi
- voice dubbing: Jannel Robinson (uncredited)
- Dario Penne
- voice dubbing: Royce Clark (uncredited)
- Alessandro Rossi
- voice dubbing: Moe Mosley (uncredited)
- Sandro Sardone
- voice dubbing: Sandy Gibbons (uncredited)