Willy Castello
Acting
Il prigioniero di Amsterdam
Krug's Henchman at Windmill (uncredited)
Il re dei re
Babylonian Noble
Balalaika
Capt. Testoff
Mademoiselle du Barry
Flunky (uncredited)
3 Kids and a Queen
Gangster
Lotta di spie
Duval (uncredited)
Mystery Sea Raider
Radio Operator
Il fantasma della città
Jonas
You Can't Beat the Law
Rico
Wanted by the Police
Russo
Melody Trail
Gypsy Frantz
Road to Happiness
Party Guest (uncredited)
A mezzanotte corre il terrore
Jeweler (uncredited)
The Wages of Sin
Tony Kilonis
Chasing Trouble
Kurt
Young Dynamite
Flash Slavin
Hidden Enemy
Eric Bowman
Smashing the Vice Trust
James 'Lucky' Lombardi
Port of Missing Girls
Manuel
Race Suicide
Rudolf von Hertsen
Drums of the Desert
Addullah (as William Castello)
Mad Youth
Count DeHoven
Heroes of the Alamo
General Cos
Border Romance
Lieutenant of Rurales
The Dawn Express
Otto
Confessions of a Vice Baron
Lucky Lombardi aka Count de Hoven / Van Hersten / Kilonis
You're Out of Luck
Johnny Burke
Special Agent K-7
Eddie Geller
The Panther's Claw
John Martin George (as William Castello)
Le Chant du marin
De Jantjes
Dries