I am just relaying what the guy said on face book. I have prime one joker and it is not hallow so maybe some other are but not sure where you got that info from. For one I disagree, I have many solid pieces from different companies. The prime one I have is two boxes too to lighten shipping but I assure you that piece is not hallow! Anyways, Idk about Thanos, he posted a pick and was very upset and ranted on about it. I don't like comic book stuff really like marvel only one I like is Heath Joker only comic one I have. It is in pieces, plus I can name a bunch of solid statues I have general grevious ss pf iron studios vader, old ss predator maquette hcg legendary terminator, jason vs freddy jason pf, ss pf endo old one. Then the hcg legendary power loader which by the way weighs a ton and is very well done!!! I got for a steal on their Christmas deals. Anyways. The only leg one that was part plastic I have I notice is darth maul legendary head, but the body is not! So, it can be done. Especially, when they come in pieces due to magnets or pegs. But I don't know much about Thanos I know that is a big piece but not all people like hallow pieces that was my point. But I do agree on the aspect of some pieces needing to be hallow but I would not buy it or I would buy for a great deal. Just depends on the look too. Peace!