"Overall this mech looks great, is a great value for your money, has a good selection of minifigs, and has knees!
My two main problems for this set are as follows:
1. There is a gap between the head and the chest making the ninja operating it vulnerable
2. My main concern for mechs is posability. The leg and feet posability is great. The arm posability needs improvement. Lego designers often miss the fact that arms can cross over the chest, and you simply can't do that with this set and it's unfortunate. This means you are limited on the amount of arm poses you can do and what fight poses you can display with."