Who is your favourite rival, including Hugh from B2W2?
Mine is Hugh. He's the only rival with a backstory, (eg. his sister's Purrloin was stolen by Team Plasma five years ago, and as he couldn't rescue it because he was too young, he hates Team Plasma) and so he actually has a motive for doing the things he does. The only problem I have with him is that you don't battle him nearly enough, though I guess you do have quite a few tag battles with him.
Mine is Hugh. He's the only rival with a backstory, (eg. his sister's Purrloin was stolen by Team Plasma five years ago, and as he couldn't rescue it because he was too young, he hates Team Plasma) and so he actually has a motive for doing the things he does. The only problem I have with him is that you don't battle him nearly enough, though I guess you do have quite a few tag battles with him.