*insert jokes about Hungarians being called "aliens" amongst Europeans* ok but what if it turn out that his origin is combined from both that joke and the setting's bizzaro plot: - SpyxFamily-world's version of the Hungarian/Magyar people & their Ugric ancestor are actually ancient aliens emergency-crash-landed on Earth and established themselves a kingdom/country there - Donovan Desmond descent from there, therefore he is both a Hungarian & an alien
How the FUCK can you even tell? Do you know all of Tokyo so hard that you can recognize any part of it directly?!
Honestly that's closer to the truth than one might think, after a while a lot of places start being recognizable by very subtle hints, sometimes even just by "vibe" alone. That said, this one is pretty famous because of the anime, so I've been there, which helps.
IIRC, Carmilla's summer NP is named Testarossa Maiden, which nominally sounds like a reference to the car built by Ferrari...but this ain't no Ferrari.