Lin.
Lin, Lin, Lin. Everybody's favourite green haired antagonist.
I actually wouldn't dislike her as much if Solaris wasn't built up(and built up rather well)to be the main antagonist for the first half of the game. Like you've got this dude that's able to take on one of the strongest gym leaders in the region with a MASSIVE type disadvantage, then proceed to hype tf out of him by showing that he could literally beat everyone at Pyrous Mountain on his own with just his Garchomp. It's then show that his son is Taka, the friendly Meteor that's been bailing your ass out again and again. He's given a goal that later turns out to be understandable if anything else; he wants to bring the ruins his family kept under the city back to glory, a site that was built over without his permission soon after his parent's death at that. Most of his more positive traits are informed attributes through Taka, showing that he was if nothing else, a family man. In my eyes he has many traits of a well built up main antagonist.
Then Lin gets revealed. Immediantly you go "Oh fuck." Why? Because she's stated to be the true leader of Team Meteor, implying that she's beyond even Solaris. This demotes the former 'Big Bad' into the Dragon. Which really only increases Meteor's threat level given that the Dragon was capable of going toe to toe with a high ranking gym leader while at a disadvantage and that his servant is a member of the Elite Four.
And then literally nothing gets done with this hype. She just. Takes down a Steelix you've beaten 2 minutes prior and then vanishes off the face of the Earth until episode 16. The only real remarkable thing about her after this is that she spouts some of the most comically edgy lines I've ever seen.
Oh yeah. And she's responsible for Taka's death.
I just can't stand this character at all.