Dorothy Herbert

饰：Alice Brent

爱德华多·钱内利

Eduardo Ciannelli

饰：Doctor Satan

Robert Wilcox

饰：Bob Wayne

William Newell

饰：Speed Martin

C. Montague Shaw

饰：Prof. Thomas Scott

查尔斯·特罗布里奇

Charles Trowbridge

饰：Gov. Bronson [Ch. 1]

杰克·茂豪尔

Jack Mulhall

饰：Police Chief Rand [Chs. 1, 4, 13]

Edwin Stanley

饰：Col. Bevans

沃尔特·麦克格莱尔

Walter McGrail

饰：Stoner

Joe McGuinn

饰：Gort

Bud Geary

饰：Hallett

Archie Twitchell

饰：Ross

Lynton Brent

饰：Scarlett [Chs. 1-5]

Al Taylor

饰：演员 Actor/Actress

特德·斯坦霍普

Ted Stanhope

Ernest Sarracino

饰：演员 Actor/Actress

赛·欣德尔

Cy Schindell

Eddie Parker

Jack O'Shea

Hal Price

饰：演员 Actor/Actress

Lloyd Whitlock

饰：演员 Actor/Actress

肯·特雷尔

Ken Terrell

Bill Yrigoyen

饰：演员 Actor/Actress

Helen Thurston

饰：演员 Actor/Actress

Bud Wolfe

饰：演员 Actor/Actress

Cy Slocum

饰：演员 Actor/Actress

Duke Taylor

饰：演员 Actor/Actress

Harry Strang

饰：演员 Actor/Actress

瓦利·韦斯特

Wally West

汤姆·斯蒂尔

Tom Steele

Paul Marion

饰：Corbay [Ch. 1]

Frank Brownlee

饰：演员 Actor/Actress

Frank Conklin

饰：演员 Actor/Actress

戴维森·克拉克

George Davison Clark

饰：演员 Actor/Actress

Virginia Carroll

饰：演员 Actor/Actress

James Bush

饰：演员 Actor/Actress

Ed Cassidy

饰：演员 Actor/Actress

亚基马·坎纳特

Yakima Canutt

特利斯特拉姆·科芬

Tristram Coffin

大卫·夏普

David Sharpe

饰：演员 Actor/Actress

John Bagni

饰：演员 Actor/Actress

弗兰克·埃利斯

Frank Ellis

Charles Hutchison

饰：演员 Actor/Actress

Bert LeBaron

饰：演员 Actor/Actress

Jerry Jerome

饰：演员 Actor/Actress

Marten Lamont

饰：演员 Actor/Actress

Duke Green

饰：演员 Actor/Actress

Sam Garrett

饰：演员 Actor/Actress

肯尼思·哈尔兰

Kenneth Harlan

James Fawcett

饰：演员 Actor/Actress

艾迪·朱

Eddie Dew

饰：演员 Actor/Actress