Board Thread:Questions and Answers/@comment-207.6.112.238-20160226061919/@comment-25121259-20160303231929

Well, that depends on what you mean by "clone".

Ragna's body is artificial and it is unknown (even Ragna doesn't know) just whose soul it is within his body. There are also many parallels between Ragna and Naoto, actually it even looks like someone purposely orchestrates Ragna's life as if one was reproducing the important events from Naoto's life. For example:

- both of their homes were destroyed when their sisters went mad,

- both of them lost their arms and were dying, only to be saved by a blond haired vampire from the Alucard clan,

- both of them lost another limb/s when saving a blond haired artificial existence; in the same day as those events happened, both of them also displayed even more power than ever before and owned some villain who was using the previously mentioned blond haired artificial existence.

There might be more actually, for example Ragna was mortally wounded during the event of his home being burned down and to survive he had to reach out for a new power. The circumstances regarding how Naoto obtained the thing that beats within his chest along with Bloodedge might be similar (this would mean that the event of being saved by a vampire and the event of reaching out for power were reversed), at least it is heavily implied that Naoto didn't have it originally, or that even a human wouldn't either have or be able to use it (well he did seemingly start using it only after his vampire metamorphosis had begun). Then there is the whole thing regarding Naoto's existence eating away at Ragna's and all of that other stuff.

As for Jin it hasn't been revealed what he was doing in the facility/lab, but he might be something like a backup body for the soul within Ragna, into which a great amount of Power of Order was inserted into, to the point that it gained sentience. After all, there are other members of the cast that also have Power of Order (in small amounts compared to Jin), but those members, indifference to Jin, do have proper souls, whereas Jin's (actually Hakumen's) soul was the only one mentioned as an abnormal (except for Celica, but in her case it was tied to her ability to manipulate the flow of life). What's more, even though there are other people with the Power of Order, Jin is the only one that is simply being referred by Relius as the Power of Order.

As for Saya, she was supposedly made as a container for Izanami, from what I heard.

Another thing to mention, is that one has to remember how Relius operates (he usually has other samples prepared, like when he was smelting 13, he still had 11 and 12 as backup and for other experiments) and that the facility/lab that Ragna, Jin, and Saya were in, might have been prepared by someone before or after the experiment in AD 2099/12/31. They might have been in some sort of stasis or hibernation, until Jubei found the facility, awakened and rescued them from it, or not. There is too little known about it, aside that it seemingly was quite heavily protected as Jubei returned to the Church wounded (well at this point he was already past his prime).