The most beautiful video game character by appearance and by personality overall has to go to:
<spoiler=Hanako from Katawa Shoujo>
Gosh darn, I have
never met or seen a character like Hanako before. In the original game of Katawa Shoujo, she's very shy (obviously) and has some issues with herself. However, she's not the "I will do whatever you want me to" cliche' character. She's actually strong willed, despite her fears and social conflicts with society.
Plus, she wants to be a person and not some 'help me, poor me' type of person. She doesn't want pity or someone trying to 'save' her but rather accept her like any person would whether it's being friends or more. So much depth to her character, the way she cherishes you and acts kind despite the bullcrap she has to deal with (Looking at you Hisao...) Besides that, she's beautiful outside, and especially inside. She'll always have a place in my heart and I can go on and on about Hanako but... yeah just play the game and see for yourself.