I'm the builder of Karzahni! Thank you so much for featuring my MoC in your video! You complimented me not only on the appearance of the head and weapons, but also on the structural aspects of the body. I'm very happy! I will continue to work hard to create cool MoCs. I hope to be introduced to you again. See you soon!
Kharzani was mutated by the pit after being cast out of his own previously sealed off realm where he maims matoran with poor "upgrades" and forces them to do hard labor. He's like the opposite of Artakha
Nope. They are using Bionicle/Constraction pieces. No 3D Printing to my knowledge. But if you have more questions about the MOCs be sure to comment on the posts of the original builders, they'll be able to answer those questions in more detail, since they made them :) (Links to them are in the video description.)