First off, I would like to say that have actually seen the actual film in its original form, not from watching an episode of Mystery Science Theater 3000. So my comments are entirely based on my watching the film without the benefit of Rod, Servo and the rest of those imbeciles whose names I have forgotten.
The first thing that amazed me about this film is not that its makers managed to get this film released, the fact that they managed to sell a film so cheap looking to major studio like Warner Brothers. I would love to known what sales pitch they used to sell it to WB executives. This film by the way, turned up a support feature for the second Godzilla movie, GIGANTIS,THE FIRE MONSTER, which Warner Brothers also distributed.
The acting in the film is amateurish and dialog delivery is stilted. The actors delivery of the lines is reminiscent of the stilted dubbed dialog heard in those cheap Italian made spectacles that were just about to flood the American market when this film came out. The films plot is loaded with more holes than swiss cheese. Perhaps the most ludicrous element of the film is the Gargon, which is nothing more than a macro enlarged lobster (or is it a crayfish?). On the plus side I was surprised that director Tom Graef used more camera set ups and camera movement than is usually found in a lowbudget picture of this nature. This makes TEENAGERS FROM OUTERSPACE not as dreary as other very low budget films from the same period like THE ASTOUNDING SHE MONSTER.