Captain America is a 1944 Republic black-and-white 15-chapter serial film loosely based on the Timely Comics (now Marvel Comics) character Captain America. It was the last Republic serial made about a superhero. It also has the distinction of being the most expensive serial that Republic ever made. It stands as the first theatrical release connected to a Marvel character; the next theatrical release featuring a Marvel hero would not occur for more than 40 years. It was the last live-action rendition of a Marvel character in any medium until Spider-Man appeared in the Spidey Super Stories segment of the children's television series The Electric Company in 1974.
The serial sees Captain America, really District Attorney Grant Gardner, trying to thwart the plans of the Scarab, really museum curator Dr. Cyrus Maldor—especially regarding his attempts to acquire the "Dynamic Vibrator" and "Electronic Firebolt", devices that could be used as super-weapons.[2]
In a rare plot element for Republic, the secret identity of the villain is known to the audience from the beginning, if not to the characters in the serial. The studio's usual approach was the use of a mystery villain who was unmasked as one of the other supporting characters only in the final chapter.
Adventures of Captain Marvel is a 1941 American 12-chapter black-and-white movie serial from Republic Pictures, produced by Hiram S. Brown, Jr., directed by John English and William Witney, that stars Tom Tyler in the title role of Captain Marvel and Frank Coghlan, Jr. as his alter ego, Billy Batson. The serial was adapted from the popular Captain Marvel comic book character, then appearing in the Fawcett Comics publications Whiz Comics and Captain Marvel Adventures. The character is now owned by DC Comics and is known as Shazam.
Adventures of Captain Marvel was the 21st of 66 film serials produced by Republic and their first comic book character adaptation (not counting comic strips). The serial featured the Fawcett Comics superhero, placed within an original screen story. It is considered the first comic book superhero movie. Captain Marvel fights a masked criminal mastermind called the Scorpion, who is determined to gain control of an ancient weapon. It is made in the form of a large metallic scorpion with adjustable legs, tail, and removable lenses that must be properly aligned in order to activate its powerful ray.