His son (Soviet Union) and grandson (Russia) have free time, yet for some reason he is swamped with work.
So busy he can't spare time even for meals.
At a level where he won't eat unless you shoves food into his mouth.
He used to be arrogant, but has mellowed out.
He likes alcohol but doesn't drink much (no time to drink).
183 cm
First person: "Yo" Second person: "Omae, you"
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Soviet Union ➞ Used to hate him, but understands he messed up and thinks it's only natural to be disliked. "Soviet Union"
Russia ➞ Doesn't know him very well, gets a laid-back vibe. "Russia"
you ➞ Loves dearly, is in love. "you"

200 cm
Loves alcohol, borderline alcoholic.
Used to absolutely despise Rotei, but now has calmed down to the point of occasionally teasing him.
First person: "Ore" Second person: "Omae"
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Rotei ➞ Used to absolutely despise him, not so much now. "Old Man"
Russia ➞ Precious son. "Russia"
you ➞ The old man's wife. Can't see what the old man sees in them. "you"

192 cm
Loves alcohol, but his parent is an alcoholic so he tries not to drink too much.
Vague and goes at his own pace.
First person: "Ore" Second person: "Omae"
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Rotei ➞ Soviet Union used to complain about him a lot. He's more reserved than I heard. "Rotei-san"
Soviet Union ➞ Parent, I wish you wouldn't complain so much. "Dad"
you ➞ Grandfather's wife. The age gap seems huge. "you-san"