The figures are Bring Arts Nier Automata Machine Life Forms set, and The King was part of a set with YoRHa Model No 2. I used Kotobukiya MSG parts for hands and weapons along with Hexa Gear parts for arms, legs, and weapons, and HGBC Powered Arms. Lastly I used Joy Toy portions for the first figure shown with wheels, and for the King's Carriage.
http://dremerc.blogspot.com/2019/03/bring-arts-nier-automata-machine-life.html
http://dremerc.blogspot.com/2019/04/bring-arts-automata-machine-life-form.html