MandelBroSet’s review published on Letterboxd:
Mutant Aliens is my least favourite of Plympton's feature length films so far.
There's plenty of creativity and the mutant aliens themselves are fun. However, the film took a while to start gaining moment. That, and it features some very sleazy sex scenes. Not that that's always bad, but I don't know, something about these scenes seemed unnecessary and rubbed me the wrong way. Feel like Plympton only threw them in because he was horny at the time.
Scavenger Hunt 64
13. Watch a non-Disney animated film.