User blog comment:12shzarmai/Why isn't there MORE Servants or Heroic Spirits from other continents APART from Asia and Europe???/@comment-124.120.200.215-20180630135912/@comment-34352073-20180630153953

For the Slavic myths thing: Probably because those things had nothing to do with the plotline that I assume they had thought of. I mean, I guess Baba Yaga could've been a player, but other than that, the rest are there precisely because they're famous. TM seems to start from the top. I guess the biggest reason for Ivan being there is the fact that they'd name-dropped him in Apocrypha already. Would've been a waste for him not to show his face given the chance.

For the Hindus, once again, starting from the top. We'll have to see who the Lostbelt Berserker is (given that he's very probably from India).

Thug Behram would actually make for something interesting, but there's not much to go with his legend. No mysteries to explore, nothing besides being a killer to flesh out. At least Jack the Ripper has the whole mystery bit going for him (which is why the legend's so famous - that and incompetent investigators and the press hyping the whole thing up). Christman, on the other hand, is specifically noted to be probably fictitious as well as sharing roughly the same story and deeds with 8 other guys.

Point being that even though TM seems to start from the top, the question posited above seems to be why they don't start with some places in the first place. Older legends are also more likely to be included, unless the hero in question is really famous (as in famous enough to be a part of pop culture, as it happens). I can only assume, but ancient heroes seem to preferred, with the cutoff point being circa the start of the second millennium.