What's that, Aggron? You have 180 Base Defense? You can take Earthquakes like a motherfucker? That's pretty fucking awesome.

But ground type moves are 4x effective against Aggron.

That doesn't mean it's going to kill him in one hit. It might, but that's dependant on the Base Attack of the opponent. Most of the time though, at least from my experiences, an Aggron will still be standing after an Earthquake.

Well then.... TWO EARTHQUAKES!!!!! :D

Touche

or water

Well, water type moves are only 2x effective. Fighting and ground type moves are 4x effective.

tou'che