tu don't exactly decide. At least in my opinion. Anyways, most of the time your favourite characters can grow on you, others tu find tu start to like over time, o in some cases a character tu grow to like even though tu didn't like them at first. Some times characters can become your favourite right away. -smiles-
The way Prussia became my most favourite character was an over time thing. At first I actually didn't like Prussia. I thought he seemed loud and kind of obnoxious. After awhile, I started to see his character más and his personality. He then became my most favourite hetalia character. I absolutely just amor Prussia and I admire him. He's utter perfection in my eyes.
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