Grimsley is the Dark type Elite 4 member in the games Black, White, Black 2 & White 2. With Grimsley's team being in the same in both Black & White, alongside the remakes, which his team is Liepard, Scrafty, Krookodile & Bisharp, so you can bring a Fighting type and defeat his team on the offensive side of things, but it will by no means be easy with his Krookodile having Intimidate, so you can't heavily rely on a Physical pokemon to win you the match, unless you set up a bit before the Krookodile comes out. Then you got the Moxie Scrafty which can be dangerous if you let it KO pokemon on your team, then Bisharp is just scary offensively, and finally you have Liepard, which can be annoying with fake out & attract, but Liepard won't do as much damage offensively. So yea, Grimsley isn't the most difficult elite 4 member of Unova, but he is definitely a tough battle, and that's part of why I love him. Another part of why I love Grimsley has to be from his design, definitely in contention for top character design of Unova in my eyes. Overall Grimsley is great, just I had my top 3 set in stone for a while now, and Grimsley was the last to fall before the top 3.