User blog comment:Hitsuji Mamoru/Servant Creation Room 2 : Guess of the Who/@comment-4802891-20170526200433/@comment-4802891-20170605141517

Ok, I edited a few things in NP and Bond CE. Hopefully it can help you.

Try not to focus too much on the Hacker part. Also, his 3rd skill is the biggest clue in the whole thing : "???" is the shape the virus vault takes. If you can pinpoint what it is, you will discover who's the Servant.