Thread:Valeth/@comment-38196594-20190122002644/@comment-27971189-20190122031543

1. It depends on which Fate series we're talking about.

After all summoning system throughout the spin-offs are different to each other. Example aside of FGO, CCC with its Mooncancer and Alter Ego, and FSF with its Watcher. Its up to each writers creative idea (and Nasu approval. LOL).

2. Its created, the rest is depends on each of series circumstances. Example other than FGO:

On FSN / FZ / Apocrypha-- as Waver said on his own anime, Mage Associations are basically bunch of oldies dedicated themselves pursuing "Root", peak of all dimensions. Grail is a method created by mages to achieve that. Grail War is ritual to achieved that.

Good example of different kind of 'Grail' is on Extra / CCC, where "Grail" is total authority of a super computer that allowing the summoning system.

3. Yes.

4. Often referred as creators to said Grail, under normal circumstances, they (Einzbern, Matou, Tohsaka) have privilege of, 'prioritized as one of the competing Masters', on HGW. As they pursuing the "Root" as well, its hard expecting them to say "We're not participating on HGW this year."

Some spin-offs like Apocrypha also have them with them 'gave up' pursuing the Grail that they not even participating.