#2. Garchomp
Dragon/Ground
Ah, Garchomp, the Land Shark Pokemon. I'll be honest, it's not the awesome design, its great use in battles, or its stats that brings this Pokemon this high. These are all strong points but it's its trainer that brings this Pokemon to the #2 slot. Cynthia is, without a doubt, the best Pokemon Trainer in the Pokemon series. And yes, that includes Red. Cynthia's perfect IV team is always incredibly balanced and incredibly strong. I remember this being the first Champion I couldn't brute force my way through with one incredibly strong Pokemon (something I did in every other Pokemon game before). Plus with her appearance in nearly every Gen IV and V game gave her presence not really felt in other Pokemon characters. Throw in an incredible pre-battle and actual battle theme and a great design and Cynthia, as well as Garchomp, has left an incredible impression on me and brings Gen IV into my personal favorite Generations.
As for Garchomp itself, I great enjoy his design. I especially like the idea of a Land Shark and its fins coming ever close to you waiting to strike. As for gameplay, Garchomp makes for a particularly fierce opponent. Despite having a 4x weakness Garchomps speed and attack make it hard for Pokemon with Ice type moves live long enough to exploit it. All in all, a great pseudo-legendary.