They are both Countryhumans, personified countries and all very stereotypical depending on what country-human they are. USSR was very very serious, especially with all the communist stuff going on right now, being overprotective of his son and agitated about Third Reich, his enemy would do. USSR is a very strict father, although like said before, he finds his son quite cute which he is. USSR always picks his son up for no reason because he is very light and quite slim with fluffy hair <3.