The following review is by Trishbot of the mcforum.

Sexed Up Superheroines 7 brings us more hot, sexy heroine-on-villain action, and needless to say, anything with Steve Steele, beautiful women in spandex, and mind control is a recipe for success.

Leigh Livingston, a very pretty girl with a very tight body and very firm, sizable breasts, stars as Power Princess, wearing a familiar white, red and blue outfit that has her cleavage on full display. Her balance of girl-next-door good looks and bombshell figure make her one of the most attractive models in the series. Though there aren't the usual blank out zombie moments, her corruption from squeaky clean heroine to hypno love slave is just as sexy and satisfying.

Steve Steele again appears in multiple roles. He has a fantastic bit part as the always amazing Dr. Steele. The cameo is short, but highly amusing. (What's whiter Steve? Your chest? Or Power Princess' leotard?) He also portrays the main villain, the nefarious Prof. H, a wheelchair-bound psychic with a penchant for mind control. His hilarious over-the-top facial expressions, faux-british accent and goofy haircut, make him one of the more memorable bad guys thus far. His mental commands are highly entertaining to listen to and make the sex dialogue much more interesting.

Despite Steve's skills, it was Man-Fly who had me in stitches during his brief cameo. The goofy villain from Episode 3, has managed to cheat death, only to face more failure and humiliation. He performs so remarkably well, and appropriately over-the-top, that I can only hope he makes a few repeat appearances. Even his scenes in the outtakes are highly entertaining. (I mean, good GOD, how many takes of him getting beat up with a steel pipe did they have to film?) He's yet another great goofy baddie in a long list of great goofy baddies (though I think Aluminum Foil Guy has yet to be topped.)

The sex scenes are great too. There's a very hot and steamy shower masturbation scene with Leigh that is quite erotic, as well as a humorous stripper-pole routine that was very entertaining. The actual sex itself was nothing we haven't seen before, but, again, Prof. H's mental commentaries make it memorable, and it's still some great material with a very attractive actress.

Overall, this is yet another solid installment in the already excellent Sexed Up Superheroines series. Leigh Livingston is a great new addition and will be sure to please fans of "power"-ful heroines. The villians are again memorabe and creative, and the requisite humor is still there in spades.

No one understands what makes comic book fantasies click as well as Steve Steele does. His various homages to heroines and villains with characters like Power Princess and Prof. H are proof of that, and it really helps to elevate the material.
 
You owe it to yourself to check this episode out. It's another great chapter in the ever unfolding saga of superheroine sex and surprises. I certainly look forward to the next one.

The following review is by Madcapof the mcforum.

"The Power Principle" by Steve Steele doesn't contain the style of hypno I usually go for. But as an avid comic book geek, I tend to appreciate his forays into the superheroine genre. And this movie does have its share of mind control. Though not the "zombie" control we've see in many of his other films, the psychic powers of Professor H will give hypnosis fans something to enjoy.

Leigh Livingston is great in the role of the Power Princess, and she fills out the costume nicely. She soon falls under the sway of
Professor H's mental prowess and finds herself following his commands. He projects all of them mentally (through a nifty special effect), which really emphasizes the control he has over her. One thing I like about Leigh's performance is that Professor H will tell her to do something (or ask her if she's enjoying herself), and she'll say "no!" defiantly, but then a few seconds later she'll mumble a quiet, breathy, submissive "yes". I'm sure many fans of comic book mind control will appreciate that.

Another thing Steve does right is that he never has her take off her costume completely. She's always got her gloves, boots, and cape
on, which helps to emphasize that this isn't just any old girl--it's the Power Princess! And for part of the sex she has her entire costume on,
which may appeal to some of you. The sex itself is nothing you haven't seen before (though her breasts do bounce rather nicely!), but since Steve is playing a paralyzed character, she has to do all the work, which kind of emphasizes his control over her as well, so that does put a slightly different spin on things.

And, as you've come to expect from Steve Steele by now, this video is chock full of humor, from the hilarious Man-Fly's antics to some of
Professor H's mental comments to himself and the viewer. Oh, and his facial expressions while he's projecting his psychic control are
hilarious.

This is a worthy addition to Steve's superheroine video library that fans of his previous work will certainly enjoy, and fans
of a certain white, red and blue-clad superheroine should definitely check out!