Talk:Rou/@comment-72.213.137.35-20150713054938/@comment-98.221.3.160-20150720040157

He made them by eating slave collars that the adventurers that raided the magicians' tomb had on them. That gave him the "enslave" ability, which he then put into ear cuffs by using the special ability of his arm to generate metal that he's eaten before... I think using his synthesis ability, which is confusing since that's what lets him combine his powers, so it's probably either a translation error or he can use that ability for more than one thing.

He also puts his parasites into it, to allow quick long range communication.