 Warren HullThe Spider / Richard Wentworth / Blinky McQuade | The Spider / Richard Wentworth / Blinky McQuade |
 Mary AinsleeNita Van Sloan | Nita Van Sloan |
 Dave O'BrienJackson, Wentworth's Aide | Jackson, Wentworth's Aide |
 Joseph W. GirardPolice Commissioner Kirk | Police Commissioner Kirk |
 Kenne DuncanRam Singh, Wentworth's Hindu Chauffeur | Ram Singh, Wentworth's Hindu Chauffeur |
 Corbet MorrisMcLeod | McLeod |
 Bryant WashburnWestfall | Westfall |
 Anthony WardeHenchman Trigger | Henchman Trigger |
 Harry HarveyStephen | Stephen |
| AArthur BelascoButler | Butler |
 Stanley BlystonePoliceman | Policeman |
 Lane ChandlerPolice Lab Fingerprint Man | Police Lab Fingerprint Man |
 Stephen ChaseJenkins, Wentworth's Butler | Jenkins, Wentworth's Butler |
 George ChesebroHenchman | Henchman |
 Steve ClarkHenchman Meeker | Henchman Meeker |
 Ruth FindlaySecretary | Secretary |
| JJack GardnerPoppy - the Bartender | Poppy - the Bartender |
 Chuck HamiltonHenchman Gunther | Henchman Gunther |
 Tom LondonDetective | Detective |
 George MagrillHenchman | Henchman |
 Joe McGuinnHenchman | Henchman |
| IIrving MitchellHolden | Holden |
 Jack MulhallDetective Farrell | Detective Farrell |
 Frank O'ConnorDetective | Detective |
 Jack O'SheaArmored Car Driver | Armored Car Driver |
 Jack PerrinArmored Car Driver | Armored Car Driver |
 Lee PhelpsPolice Officer Mulligan | Police Officer Mulligan |
| JJack RoperDetective | Detective |
 Cy SchindellHenchman Brown | Henchman Brown |
 Charles SullivanHenchman Haney | Henchman Haney |
