That's why they were the source of The Ooze in the Teenage Ninja Turtles movie! The live action one that's totally rad and no one can convince me otherwise! .... even though I think I remember seeing #2 way more as a kid... and they are so very much products of their time ...
Yea, they hold up A LOT better than quite a few movies from that time.
Interesting how only the truly exceptional CG holds up like in Jurassic Park and Dragon Heart, whereas even the mediocre puppetry and props have a bit of charm to them.