Bulgaria has short hair with bangs that are parted in the middle. He has fair skin and turquoise is confirmed to be the colour of his eyes in an official coloured sketch of him. He appears to have two uniforms; his uniform is shown as gray-green in the anime. The other uniform is in a light black colour with buttoned sleeves. He wears a leather belt to hang his holster and ammo pouch, alongside white gloves. He resembles the main character from the anime Attack on Titan and has been drawn in a Survey Corps jacket because of this. He is a member of the Axis Powers yet states that he has always had a desire to hit Italy with a stick. Bulgaria is quiet unless he's with people he's close to. He is also shown to be thrifty and works hard, but seems to struggle in the EU. He also rather has an unnatural obsession with yoghurt as he can transform into a yoghurt fairy. In World Stars Chapter 347, he says that he rarely gets praised so when he does get it, his back will become itchy. Bulgaria shakes his head to mean 'Yes' and nods to say 'No', which often causes confusion from the others.

Romania is a young man of average height with wavy, shoulder-length strawberry blond hair, pale skin and red (sometimes pink) eyes. He also has a distinctive pair of pointy fangs, though most of the time only one of them is shown protruding from his mouth. This characteristic is shared with Moldova. Even before Hetalia☆Collezione[6] officialized many characters' heights, a blog post[2] from 2014 mentioned that Romania was 172 cm tall. Romania loves black magic, folktales (referencing myths of Romanian vampires and demons), strange and mysterious things, making him to come out as an eccentric character plus the fact that he's an expert in magic and fortune-telling. In reality, he is a friendly and mischievous person who is said to be very good friends with Bulgariaand often quarrels with Hungary. Apparently, when speaking of fairies, Romania also has his romantic side too. He has the appearance of a jokester, when he is actually a hard worker who reads the atmosphere well. He is nearly as infatuated with Roman culture as Germany; this may be why he desperately tries to prove his descendancy from Rome, to no avail.