Lucario's really cool, and the slew of attacks he can learn makes him an incredibly sound investment for a late game teammember if you've got the patience to dig up a Riolu early, but I had no idea that he was THAT popular. I'm 5 badges into B/W 2, and the game is doing a FANTASTIC job of giving out a whole slew of incredibly powerful and viable Pokemon, particularly once you've gotten your hands on serf.<br/><br/>Axew and Aron, for instance, share a cave together... Both of them evolving into absolute powerhouses.