In short, yeah, Serbia is somewhat aligned with Russia geopolitically (this is a relatively recent, post-Yugo development resulting from its isolation due to all the wars and genocides and whatnot), although it's a bit useless for the Russkies themselves.
Bulgaria is firmly pro-Western on the state level (and part of EU and NATO), but it's chock-full of ziggers as well, and various populists are exploiting that.
Spartacus lived long before both the Slavic invasion (which, together with what remained of the local ex-Thracians/Greeks/whatever, eventually resulted in the Bulgarian ethnogenesis) and the Bulgars (from which the ethnonym came). As for relevance, well, it hasn't been really relevant since the 9th century, when the Cyrillic alphabet was fashioned on its territory.
>Here is the bulgarian Touhou, Yuuka Kazami. She has the ability to control the flowers of all four seasons.
Cool, is that officially so (I don't know shit about Touhou, lol)? I remember there being some Touhou girls/countries correspondences on the old Krautchan, but can't recall which is which.