So yeah I didn’t make these (I can’t tell if they’re 3D printed or bootleg, might be a mix, differing opinions have been shown) but I did find them in bags of Bionicle parts!
To put it simply my luck is absolute crap and also amazing at the same time, why is because I always find amazing pieces such as these or almost full semi-expensive sets but I never find the exact peices I’m looking for at the time.
Ok so this one came from a $10 bag of parts which also had all of an exo toa in it too!
This one is more recent from 3 bags of parts I got from value village, which was awesome becuase I haven’t found any there in forever! There were also a lot of other parts and I was inspired to make another moc (who I’ll be putting up soon, only hint is its one of my few female ones and she’s awesome looking!)
Think it was about 20/30 really cheap because the package was open so it was awesome! I’ve also found an entire exo toa (albeit dismantled) who was in the bag where I got my first custom pieces… There was also a toa mahri Kongu.
That makes me lean more towards crappy quality bootlegs rather than 3d printing.
In fact pretty much everything you’ve described leans more to crap bootlegs.
They certainly don’t look 3d printed to me.
Most of them actually match up perfectly with other peices with just a few differences, spthe rahkshi heads are a touch thinner, the grey Bohrok arms have a mild angle difference for the axle socket and the rhotuka spinners have more circular connection holes. So maybe some of them are knockoffs but I’m pretty sure a couple of them are 3D printed going off of quality.