Ken Clark as Dick Malloy / Agent 077

Helga Liné as Dr. Elsa Freeman

Philippe Hersent as Heston - CIA Chief

Mitsouko as Kuan

Umberto Raho as Prof. Betz (as Umi Raho)

Susan Terry as Juanita

Antonio Gradoli as Lester (as Anthony Gradwell)

Andrea Scotti as Taxi Driver

Brand Lyonell as

Peter Blades as

Peter Bach as

Franca Polesello as Malloy's Lover

Pulla Coy as

Mirko Ellis as

Dario Michaelis as

Erika Blanc as Heston's secretary (as Erika Bianchi)

Alfredo Mayo as

Ignazio Leone as URSS Agent

Tomás Blanco as

John Jordan as

Félix Fernández as

Paul Mercey as

Alfonso Giganti as Henchman