In an attempt to save this topic, why don't we talk about what we think of Harley so far and how he is as a character? I'll start.
When I first heard of Harley, I just thought he would be a bland, one-shot character. Instead, he's a repeating rival with a personality of his own. Though it was somewhat odd that he dressed up like a Cacturne, I thought it was a cool detail. When he got beat by May's Squirtle(which, by the way, has made me forever hate all Squirtles) I thought he'd just decend into a lame villain trying to do something against a main character. This wasn't too farfetched, since, in my opinion, there was(and is) no way for Ariados to get revenge against Squirtle, seeing as how the writers would want the good guys to win and that Ariados whooping Squirtle and then dancing on it would just look lame and not have the humiliating feel. In my opinion, this act was supposed to say "Hey, this guy is going to always get whooped and be badly humiliated, so don't care about him." Looking at his fans, it didn't work too well.
It is refreshing to see a "villain" that is cunning and snide, if a bit weird. I feel that Harley is a better rival for May, while Drew is a trainer that is competiting against May. Though the Squirtle dance was enough to make Harley a bland character trying to get revenge, he still has some character in him, possibly helped by the fact that he doesn't show up in every single episode.
Well, that's about it, so let's here what you have to say about Harley.