Radio Patrol

Grant Withers

Officer Pat O'Hara

Adrian Morris

Officer Sam Maloney

Kay Hughes

Molly Selkirk

Mickey Rentschler

Pinky Adams

Silver Wolf

Irish

Gordon Hart

W.H. Harrison

Frank Lackteen

Mr. Tahata, alias Warner the Great

C. Montague Shaw

Mr. Wellington

Harry Davenport

John P. Adams, inventor

Wheeler Oakman

Stevens, gang chemist

Max Hoffman Jr.

Harry Selkirk

Jack Mulhall

Desk Sergeant

Earl Dwire

Jeremiah Crockett

Leonard Lord

Franklin, the real Tahata

Dick Botiller

Henchman Zutta

Louis Vokali

Henchman / Off-screen Trainer of Silver Wolf

Ernie Adams

Hobo

Hooper Atchley

Casey

Stanley Blystone

Plant Foreman

Richard Cramer

Charlie

Jack Gardner

Intern

Pat Gleason

Blake

William Gould

1925 Police Chief

Al Herman

Hobo Finding Suitcase

Carey Loftin

Pollard Henchman

Tom London

Eddie Lewis

Monte Montague

James Pollard

Charles Murphy

Hobo-Henchman

Eddie Parker

Police Dispatcher / Steel Mill Worker

Henry Roquemore

The Chef

William Royle

Inspector Clark

Tom Steele

Police Car 27 Driver

Frank Sully

Flynn

Ray Teal

Perkins

Harry Tenbrook

Henchman

Jim Toney

Henchman

Florence Wright

Pollard's Secretary

Ford Beebe

Director

Clifford Smith

Director