El rey de los hombres cohetes

This has some of the most convincing flying sequences for its time. The later Superman serial had him "fly" as a cartoon: here, King appears really to fly. I have read that the flying sequences used a lightweight dummy on wires. It looks pretty convincing.

Minor spoiler: There was only one "rocket man": the serial title suggests more. (The hero's name is Jeff King) For that matter, the flight controller is marked, "Slow," "Fast," "Up," and "Down." Not bad, but rough if one had to change direction in flight.

Naturally, the serial uses the standard formula of a colorful villain who's out to steal a secret, whom the hero has to contend with.

Worth viewing, but light entertainment.

Dr. Vulcan, a mysterious criminal, has been sabotaging the experiments of a group of scientists at Science Associates (SA), as well as murdering the ones who come close to discovering his identity. He murders Prof. Millard, a rocket expert, who has been suspecting the nature of Vulcan's attacks. Millard is saved from his death by his colleague, Jeff King, a sonic propulsion expert. In order to save the works and surviving members of SA (where Vulcan in his true identity, serves as a member of the board of directors), King assumes the identity of Rocket Man, using a jet rocket pack designed by Millard. For 12 chapters, King/Rocket Man battles the forces of Vulcan and tries to prevents Millard's latest invention, the Sonic Desemator, from falling into the hands of Vulcan. For 1948, KOTR comes off as a good serial, but really you think it could have a been a wee bit better coming out of Republic. Coffin turns in a decent performance as King, after playing mainly villains all his career. Haggerty is great though as Vulcan's henchman Dirken, and makes you wish Republic used him more as a villain in more serials and Bs. Brannon is no Witney, English, or Bennett when it comes to serial directing, but this is one of his better serials. Many errors of logic in the serial, but does it matter in a serial about a scientist fighting crime in a rocket suit? Rating, based on serials, 6.

It's one of Republic's last great serials, the inspiration for Disney's "The Rocketeer," and just great fun. Really standout special effects, the patented Republic furniture-smashing, body-slamming fights, a goofy plot, and just as much action and movement as you can stand. Any kid that didn't wish to be a "rocket man" sometime in their childhood had no red blood in them. Highly recommended. Star Tris Coffin should be rediscovered.

This was a fantastic serial with great special effects for it's time. Unfortunately, many who review such fare today do so from feature length versions. One must always remember that these serials were meant to be viewed, chapter by chapter, on a weekly basis. It was the draw that got you back to the theater and a five cent bag of fresh popcorn with real butter, not butter substitute. This cherished specialized cinema of the 1940's and early 50's, produced mainly for kids, was known widely as "Saturday Mornings At the Movies".

To understand and appreciate such cinema, one really needs to have the inventive mind of a child, growing up during such exciting times of pioneering new technology. There was no 24 hour television in color or black and white, VCR's, or anything to get in the way of a child's greatest attribute, their imagination. This was the generation that would grow up to make all of these modern day wonders come true.

It is also fair to mention that stars like Tristram Coffin, deserved to be remembered for the fine actors they were; despite the limited range of the roles they played. After all, it takes a fine actor to make even a child believe that a man can strap two powerful flaming rockets to his back, attached to a flimsy leather jacket with four simple control knobs in front, and fly convincingly - without being killed. How many of our high paid, so-called actors of today can effectively accomplish such a feat?

In this 12-chapter action serial from Republic Pictures and director Fred C. Brannon, the mysterious Dr. Vulcan is responsible for a series of murders of prominent scientists, as well as the theft of their scientific breakthroughs, which he sells to foreign powers. It's up to Jeff King (Tristram Coffin), a member of the Science Associates, a gathering of America's greatest thinkers, to discover the identity of Dr. Vulcan and bring him to justice. King is assisted by plucky reporter Glenda Thomas (Mae Clarke) and Associates member Burt Winslow (House Peters Jr.), as well as by the believed-dead Professor Millard (James Craven). Millard has developed a prototype rocket-suit that will allow the wearer to fly through the air at great speeds. Jeff King dons the apparatus to become...King of the Rocket Men!

This was more cheaply produced than the other Republic serials, utilizing much stock footage, and even padding most of one chapter with clips from earlier chapters. Still, this was a big enough hit to spawn a few more "Jet-Pack" serials in the years to come. The final chapter is quite epic, even if a lot of it is repurposed scenes from older movies. Most of the action scenes are the usual fist-fights and driving off of cliffs. It's all entertaining, in a simple way, but not one of the more memorable serials in Republic history, outside of the Rocket Man's image.