Quiz: Identify these 4 men

[KingOf]

4 men, 4 different ethnicities... can you identify them?
quality of photo is not that great but you can still try :)

https://scontent-sof1-1.xx.fbcdn.net/v/t1.0-9/10470_341642692599279_1731665496_n.jpg?_nc_cat=0&oh=814eaa40495e3f2129d6f5b63b32871e&oe=5BE03309

[Bosniensis]

Greek, Albo, Serb and Bulgarian xD must be one of them

[KingOf]

Greek, Albo, Serb and Bulgarian xD must be one of them

thanks for the comment but you have to say who is who
i will reveal the answer later

[Bosniensis]

This image is detailed enough that I can confirm I see 4 humans.

Anything beyond that is impossible.

[me99]

Hungarian
Romanian
Croatian
German