আপনি don't exactly decide. At least in my opinion. Anyways, most of the time your favourite characters can grow on you, others আপনি find আপনি start to like over time, অথবা in some cases a character আপনি grow to like even though আপনি 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 আরো and his personality. He then became my most favourite হেটালিয়া character. I absolutely just প্রণয় Prussia and I admire him. He's utter perfection in my eyes.
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