This is the green serpent included in LEGO 9450, LEGO Ninjago Epic Dragon Battle. As shown in the sixth photo, the mouth has an opening and closing gimmick, and the body can be posed with ball joints. I assembled it while looking at the instructions on the LEGO website. I believe there are no missing parts. Please forgive me if I overlooked anything. Only two stickers were missing, so everything in the first photo is included.