They are the jinchūriki who had their tailed beast power taken away. They are actually all dead. But Obito wants to use them to deal with Konoha and Naruto. So they are just controlled by Obito. In fact, it is similar to Pain. The dead people controlled by Nagato also have Nagato's reincarnation eye. So they will also have the Rinnegan and Sharingan that Obito has.