Talk:Fate/Grand Order : Cosmos in the Lostbelt/@comment-38700887-20190314013714/@comment-28209103-20190314053400

It's not Da Vinci AI, it's spare puppet body like the one Touko use in KnK albeit it might be inferior to Touko's doll.

In game story Holmes read ahead of the conspiracy and decided to keep all of your contracted servant in form of Saint Graph, a.k.a Servant core. Think of it like this :

Heroic spirit is like master file on the server {Throne of heroes), however it's like a really heavy program that most computer can't handle. Servant is a partial download of those source file, toned down so weaker system can handle it, in essence a lite version. When you download something the source doesn't dissapear because you just copied it, the change you made to the copy is also now independent from the source, Servant system is exactly like that.

The consequences is that a Heroic spirit summoned as a servant is independent from the main record, they experience things that the main record therefore when you summoned another one from the main record it'll be entirely new guy.

Think of it like T100 from terminator 1 and 2, they're same model but are different people.

Holmes avoided this by taking the core of the servant; a hard drive so to speak, intact. Therefore instead of summoning a new copy we can just re-boot the saint graph inside a new servant vessel and get our old servant back.