Nine_ball

First off, I think it's really impressive that you managed to build something like this with the restrictions you described. You used the pieces really creatively as well, especially those Mata head pieces for claws. If you managed to enter this in time I would have definitely voted for this, it feels like this best captures what the BBC was asking for. Great job!

I dig skeletal MOCs, especially those with unique and fully-flexible torsos, but the free ball joints on the HF arms and legs bother me. The color choices feel odd to me as well. The light grey chest piece sticks out like a sore thumb, and all the free studs left on it really makes me wish there was so smoother bricks on it at least. The red ball joints are odd because there isn't red anywhere else on the MOC. It could also use more white somewhere else on his body; having it only on the head, hands, and feet feels a little bare. I also don't understand why there's a 1/2L piece only on the right forearm and right thigh, and both of them are even different colors. Overall I think it looks neat, but there could definitely be some improvements, more specifically with color balance and the pieces used for the limbs. IMO if you keep the red pieces, I think it'd help a lot if you made the eye pieces on the head red as well (or trans-red). Maybe add another red piece to the chest to cut back on all the free studs on the chest. Some more white pieces to the torso or upper sections of the limbs would also do a lot of good, IMO. The box on the back is really cool too (don't know why one is brown and the other is black though).