first get a B rank or higher and go to the malket ruins and there shuld be three big towers with steps investigate and you should get three little robot parts but you can only get one part every time you go there then take it back to the studio and after showing all three parts to the studio lady rest for a couple of weeks and the studio lady comes and says she put the parts to gether and it just needs a soul so combind any monster with the item then you will get a henger