User blog comment:Hitsuji Mamoru/Servant Creation Room 2 : Guess of the Who/@comment-4802891-20170404162419/@comment-4802891-20170412114053

Not Indian in the slightest.

Maybe my explanation is too confusing, hopefully I can make it clearer :

What happened to this Servant, causing it to be summoned as a Berserker instead of her original Class, is similar to the deeds of a demon that appeared in the Bible (it's a minor character, but its name and one line of dialogue is famous. This line is also the real name of the first skill)

The Servant in itself has nothing to do with the demon, but its nature is a hint on what is this Heroic Spirit's Noble Phantasm.