1. Xion: she's the most realistic KH girl for me, she cares more for others than herself, she always tries to do the right thing, she made mistakes, she laughed, cried and grieved even when she thought she didn't have a heart.
2. Aqua: her as a character is awesome, she's by far the best character in BBS, I love her mature snd motherly personality, her gameplay, and how selfless she is
3. Larxene: she might look like a bitch but I think we still haven't got to see much about her, I can't wait to find out more in next KH games
4. Namine: Namine sometimes can look bland or boring compared to the others but that's just bc her personality is shy, she's a total sweetheart
5. Kairi: KH1 Kairi was great and iconic, I miss the days were Kairi had a personality and her only character arc wasn't "Sora's girlfriend" but this hasn't changed yet... She isn't a character by herself yet imo