Luke - Still a nobody.. Entered that tournament to improve his movies battle scenes and has shown no sign of returning as of yet. A pretty bland character anyway, so I hope he stays away. He seems like a ripoff of Sammy Oak.
Georgia - She annoys me, her personality is terrible. Plus I don't see the point in attempting to be a 'Dragon Buster', considering most people with fully evolved Dragons are exceptional trainers, who are generally hard to beat with any type of Pokemon.
Burgundy - Love this character! She's a total biatch, has a likeable design.. and to be honest, just the fact that she dislikes Cilan wins me over in a heartbeat.
Trip - Ugh, this boy.. I feel like he would be a pretty good character, had Paul not been such a tough act to follow. But currently his character just seems like a waste of time. Plus he's basically Cheren, who I always disliked in the game.
Ash - Well, along with Pikachu, he's the main character. If anyone still dislikes him at this point, then all I can do is question why they even bother watching the show..
Cilan - Don't get me started! I simply won't say anything, because I honestly can't be bothered with the infraction right now, which i'd inevitably get because people don't like my low opinions of him..
Iris - I like her character, reminds me a lot of our original female companion. Oh and she's such a breath of fresh air after the disaster they called 'Dawn'. Her Pokemon are pretty cool too, with plenty of potential if she gets her butt into gear.
Bianca - What can I say? She is Unova's take on Barry, who I loved as a character. I just hope they have her overcome her obstacles and become a threat in time for the league.
Stephan - Reminds me of Morrison, but more serious. I couldn't say he's an unlikeable character, but there's room for improvement. Hopefully one of Ash's early knock outs in the league.