- Awesome Music: As with Howard Shore, see also Christopher Young for the sequel.
- Complete Monster: Dr. Anton Bartok is a corrupt technology business magnate who will do absolutely anything for money and power. When Veronica, Seth Brundle's lover from the previous film, has been impregnated with Seth's mutated offspring, Bartok lies to her and Stathis about the incredible danger, and she dies during childbirth. He keeps the seemingly normal infant, now named Martin, as a test subject until his mutations manifest. He presents himself as a fatherly figure to Martin while manipulating him for his own ends. He uses a lab dog that Martin grew attached to for the telepod experiments and, when the experiment fails, keeps the mutated creature alive in agony for years for further study. When Martin grows up at an accelerated rate, he gives Martin a private home for himself and allows him to make some human contacts, but installs secret surveillance to continue observing him. He wants to use Martin's unique physiology to control the morpology of all life on Earth and make his company truly hegemonic.
- Critical Dissonance: Critics laid into the film for replacing the psychological nature of the remake with more violence and gore, but audiences generally enjoyed the visual effects of the film.
- Fridge Brilliance: Martin's transformation and fly form are much more natural and deadly than his father's. This makes sense considering his father was a genetic mishmash put together by the teleporter while Martin is a naturally born hybrid.
- Fridge Horror: After the ending of II. Okay, Martin's cured, he and Beth now have the chance to be together, and Bartok got what he deserved (or not, depending on your view). But Martin succeeded at making the telepods work — and Bartok Industries still owns them. They can do with them whatever they please. There's really nothing to stop B.I. from using them to "control the form and function of all life on Earth," as Bartok said. Why? Because B.I. is now the most powerful corporation on Earth, or one of the most powerful, at any rate. However, there's a slim chance that B.I. might soften up a bit now that Bartok is no longer the CEO and somebody more benevolent could take his place. Of course, Martin might have considered that and programmed the system to lock down afterward or wipe the system once again making the telepods useless.
- Heartwarming Moments: Despite the movie's shortage of such moments, the movie has a handful.
- The kitten Martin gives Beth.
- During his Roaring Rampage of Revenge, Martinfly is cornered by a Rottweiler. The Rottweiler whimpers in submission at the frightening monster... and Martinfly literally pets the dog, our first hint he's still human deep down.
- Later, when he comes across Beth in Bay 17, he doesn't attack her and moves on.
- What's the "magic word"? DAD.
- Jerkass Woobie: Stathis Borans, as he becomes an embittered drunk following the loss of Veronica as well as being rendered a cripple due to his hand and foot getting dissolved in the last film. While the sequel does not bring it up, it is also implied Borans lost his job as a science magazine editor when he is forced to receive a disability retirement following the loss of his hand and foot.
- Moment of Awesome: Martinfly dragging Bartok to the teleporter pod in the same fashion his late father (the original Brundlefly) dragged his mother, especially when you consider how much Bartok has it coming.
- Sequelitis: Definitely not considered anywhere near as good as its immediate tragic psychological thriller predecessor, although it is better regarded than the two sequels to the 1950's original.
- Tough Act to Follow: Any sequel to the 1986 remake had its work cut out for it, given the level of critical and audience praise it obtained.
- Underestimating Badassery: Bartok and Co assumed that Martinfly would be like his father, who wasn't actually that much of a threat against anything more than a untrained man with a shotgun, and needed the element of surprise, When Martinfly emerges, unlike his father, he is a pure hybrid, rather than a genetic mishmash, Martinfly is a powerful, towering monster, with all of his mental faculties intact, with none of the weaknsses that were present in his father, Bartok orders a capture, and it backfires horribly because Martinfly cannot be stopped.
- Visual Effects of Awesome: Director Chris Walas was also the special effects engineer for the Oscar-winning make-up and creature effects in the first film, and it continues here. Said effects are held up by both audience and critics as among the best parts of the film even to the present.
- What an Idiot!: Bartok and Co. bring Martin who entered an active phase of his mutation back to their base. He already doesn't look human and they know that his father in his later mutated form was dangerous enough to cripple a man with a spit.
You'd think: They'd place him in a bunker like one the mutated dog was kept in and keep him under 24/7 video surveillance with a team of armed security guards at hand.
Instead: They place him in a common lab with a single scientist observing him. Needless to say, he escapes rather easily and returns in a Roaring Rampage of Revenge.
- Potentially justified when considering that 'Brundlefly' was only able to wound Stathis because he took the man by surprise and was actually fairly slow and thin when his mutation finished; the security team probably assumed that 'Martinfly' wouldn't be that much more dangerous, and would therefore be more easily contained than he actually was.
- The Woobie: The Mutant Dog, as referred to above in Complete Monster.
YMMV / The Fly II