Russia is the oldest bro. Hard and strong like an ox.

China is the 2nd bro, a little resentful in the shade of Russia, super smart, and almost as strong as big bro.

India is the much younger lil bro, always late, because he's got to finish his peas before mom n dad let him out. Not yet gone through puberty, but sometimes shows signs of being smart and resilient. Or is it just dumb luck? Still some growing to do. China bro finds him tiresome, and regularly bonks him. Russia bro is protective, but dismissive.