Yes, haha, I corrected it! Sorry about that, I was quite sleep-deprived when I initially drafted this thread to be quite honest.
See, I have quite a polarizing opinion. I found her constant nagging to be immensely irritable, to the point where I nearly swore off the BW anime due to my disdain of her. Even the sound of her voice, to my ten-year old self was like nails upon a chalkboard, a most horrific sound. I just didn't care for her personality, as I don't really particularly favour people who complain excessively, especially considering none of her criticism was overly constructive. I mean I would say that I don't think the BW anime was well-written in any regard overall, and I will agree that Ash certainly seemed to have mentally regressed during the BW series for whatever reason. Of course, my dislike of her has waned significantly as I am an adult, and as aforementioned, I thought Iris made a fabulous gym leader/champion in the games.
Another character that I dislike on a personal level was Paul. He treated his Pokémon like tools and was quite cold towards them (Chimchar in particular). He also was a massive jerk in every sense of the word. However, he was undoubtably one of Ash's best rivals, if not the best. He was an excellent strategist and really pushed Ash to better himself continuously. Eventually, Paul did show growth over the DP/Pt series, which also was lovely to see. So I can't say I really dislike Paul at all, he was a phenomenal character, just a complete turd at times. I thought it was perhaps worth mentioning!
Yes, Iris definitely was a fabulous character in the games. However, in my opinion, I don't think I can pick a character that I disliked in the games. They're all pretty much solid. As for Iris and such, it's almost like different female travel companions for Ash served some sort of role. Misty seemed to be a potential love interest, as she seemed to have a crush on him to a degree without being able to admit it, and did offer a lot of (constructive) criticism at times, along with a lot of roasts. May seemed to take the role of being like a sister to him. Dawn seemed to have a similar role that May did. Iris, on the other hand, seemed to be that character that basically said a lot of the things that the fans were actually saying. Ash indeed was way off his game in Unova and she seemed to be the only person to call him out on how bad he was.
As for her personality, she just seemed like the type of friend that plays around too much, to where it can annoy you, but you're still close friends. I have had friends like that growing up. Yet, the
main thing that I like about Iris is that she is probably is the best example of perseverance in the anime, probably next to Ash himself finally winning in Alola. Iris constantly said that she was going to train up Axew to evolve into the Haxorus that it dreamed of becoming. She did exactly that. She said that she was going to do whatever it took to become a Dragon Master. She did exactly that. Not only did she become Champion with her dragons, but she also reached the level where she can literally connect with them and feel their pain. Even in the games, she leveled up. She went from being a Gym Leader that was training under Drayden to being a full-fledged Champion. All throughout, in the anime, she did it all and was revealed to still have that same immature personality, meaning that, despite her success, she never changed who she was. To me, that's actually inspiring. Lol Much love for Iris, much love for gen V, much love for Unova!
As for Paul, I didn't like Paul either. I believe that Paul was a way for the show to parody competitive battlers. Either way, Paul came off as a Pokémon abuser to me. He seems like the type of trainer that could teach all his Pokémon Frustration and have them use it at full power. He was also extremely arrogant and never cracked a single smile. I hated him.
Also, in Pokémon the Movie: Kyurem vs. the Sword of Justice, Keldeo was so annoying, stubborn, and obnoxious to the point where I was rooting for Kyurem to keep kicking his butt.