The monster design is generally regarded as cool and effective.
A highlight for many, the film uses "men in suits" for the creatures rather than pure CGI, which gives it a fun, retro Roger Corman aesthetic. BRM - The Lair.mp4
“The man-in-a-suit approach to the mutant creatures does give the whole thing that vintage Roger Corman B-movie vibe, and when the proverbial does start to hit the fan there is much joy to be had...” Flickering Myth · 2 years ago The monster design is generally regarded as cool