The Monster That Challenged the World Characters

Characters played by Tim Holt

• Lt. Cmdr. John 'Twill' Twillinger

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Characters played by Audrey Dalton

• Gail MacKenzie

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Characters played by Hans Conried

• Dr. Jess Rogers

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Characters played by Barbara Darrow

• Jody Simms

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Characters played by Max Showalter

• Dr. Tad Johns

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Characters played by Harlan Warde

• Lt. Robert 'Clem' Clemens

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Characters played by Gordon Jones

• Sheriff Josh Peters

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Characters played by Mimi Gibson

• Sandy MacKenzie

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Characters played by Marjorie Stapp

• Connie Blake

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Characters played by Jody McCrea

• Seaman Fred Johnson

Characters played by Wallace Earl Laven

• Sally

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Characters played by Robert Benevides

• Sonarman 2nd Class Morty Beatty

Characters played by John Carlyle

• Monster Victim

Characters played by John Close

• Deputy Larry

Characters played by Michael Dugan

• Clark

Characters played by William Forrest

• Rear Adm. Greenhouse

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Characters played by Gil Frye

• Deputy Scotty

Characters played by Dan Gachman

• Deputy Brewer

Characters played by Joseph Hamilton

• Lock Watchman

Characters played by Charles Herbert

• Boy with Morty's Cap

Characters played by Shep Houghton

• Helicopter Crewman

Characters played by Byron Kane

• Coroner Nate Brown

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Characters played by Dennis McCarthy

• George Blake - Lab Assistant

Characters played by David McMahon

• Patterson

Characters played by Ralph Moody

• Lock 57 Watchman

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Characters played by Milton Parsons

• Lewis Clark Dobbs

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Characters played by Sarah Selby

• Mrs. Simms

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Characters played by William Swan

• Seaman Howard Sanders

Characters played by Hal Taggart

• Davis - Resort Owner

Characters played by Charles Tannen

• Radioman Wyatt

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Characters played by Dale Van Sickel

• Deputy

Characters played by Mack Williams

• Capt. Masters