1) Dawn's the best by far, I love how she's confident and not willing to give up on her dreams, even though she lost her confidence at some points in a few episodes but she didn't give up that easily!

2) Serena's awesome, I love how she cooks for our main protagonist, cheers on for her friends, practices rhyhorn racing, and made pokepuffs for everyone! She's the best one by far!
 
3) I love how May's sweet towards her friends and always has a optimistic attitude! That's what bought the best in her is becoming a top coordinator to achieve her dreams and she did!

4) I love how she's wild! Her energetic personality got me going, we love seeing her moments in Pokemon, I love how her dream is to become a dragon master and she did it!

5) Misty our classic! I remember she followed our main protagonist to get her bike back to fix it and she finally does, also I love how she raised her water type Pokemon, that's how she achieved herself to be a water type gym leader.