Kronos WideScreen (1957)

Summary
Scientists investigate what appears to be a meteorite that crashes into the ocean. After a few days and nights of mysterious lights and noises, a giant machine comes out of the ocean. The machine is the creation of an alien race, that is trying to syphon energy from earth. A true classic, in that it is so different from anything in the time period. To this day, nothing else has come out like it.


A giant asteroid nearly five miles wide crashes into the ocean near Mexico. A trio of scientists, led by Les Gaskell, investigate, and discover a giant machine. Meanwhile, a colleague of the scientists has been possessed by an alien electricity, and is controlling the actions of a 100-foot-tall robot, which is heading for Los Angeles and destroying all in its path.

Complete credited cast:  
 Jeff Morrow ....  Dr. Leslie Gaskell 
 Barbara Lawrence ....  Vera Hunter 
 John Emery ....  Dr. Hubbell Eliot 
 George O'Hanlon ....  Dr. Arnold Culver 
 Morris Ankrum ....  Dr. Albert Stern 
 Kenneth Alton ....  The Pickup Driver 
 John Parrish ....  General Perry 
 Jose Gonzales-Gonzales ....  Manuel Ramirez 
 Richard Harrison ....  Pilot 
 Marjorie Stapp ....  Nurse 
 Robert Shayne ....  Air Force General 
 Don Eitner ....  Meteorgology Sergeant (as Donald Eitner) 
 John Halloran ....  Labcentral Security Guard 


movie info/box art  
http://www.imdb.com/title/tt0050610/