This is a creation by SwongoBricks

SwongoBricks‘ “Makuta Vacarna” is not overly complicated, though looks good and manages to include a couple play features and some interesting construction techniques. The design even reminds me of other members of the Makuta species seen toward the end of BIONICLE G1. The robotic arm looks fun to play with, featuring a spinning claw with interchangeable hands and a folding shoulder cannon.

As for constructive criticism, the waist looks a little fragile and easy to detach while posing. I would change the pins on the waist to 3 long variants to add a 1×2 technic liftarm overtop and lock it in place a little better. The spinning claw hand looks very fun as simple as it is, though I would like to see something just a bit more complicated. Maybe a couple more interchangeable hands could make use of the gearing to operate other tools and functions like a grabbing mechanism or jackhammer?

You can see more of SwongoBricks‘ creations here on youtube. He has a mix of BIONICLE and LEGO system MOCs, as well as some content like this that I sincerely wish I had on hand to feature for last Halloween.