I don't know how to complete this team I'm not going to use it online at all, just single player.
Lucario Lapras Absol Flygon Arcanine
No idea how to complete it and it needs to be something that I can get in Black 2 ... or that you trade to me! --- GT:snipper riffel All you need to succeed is persistance and a huge bloody army behind you
I found excadrill and haxorus to be very helpful. I swept the champion with a swords dance, dragon dance, dragon claw, outrage Haxorus. On Excadrill I used swords dance, rock slide, earthquake, and metal claw.
Throughout the game I found Magnezone helpful for the steel and electric weak gyms. I also had it pack twave to make catching pokemon easier.
Aside from my hm slave ducklett and sandshrew, i used Emboar.
Out of my recommendations, I can't recommend Excadrill enough. I'm fairly sure the speedrun routes for the originals solo the game with him once you can find one if that tells you anything about his power in game.
All of these can be acquired in game with minimal effort unless you chose a different starter, which isnt a big deal. --- FAIL WAR! Let's do it! I'll warn you... YOU CAN'T BEAT ME! - Deprece