Gen I:
ALL OF THE ABOVE
It's hard to pick favs from the classics. There all awesome in there own way.
Gen II:
Slowking
Who doesn't like a Pokemon that goes from a sleeping lazybones to a Sp. Attack master?
Raikou
Anyone who doesn't like the #1 legendary dog fails.
Gen III:
Swampert
Since Mudkip was my first ever Pokemon, so it's not hard to see why I like his evo.
Swellow
Best regional bird. 'Nuff said.
Gen IV:
Munchlax
Although annoying in Smash Bros., Munchlax is a humorous character and my fav of Gen IV.
Gen V:
Dewott
Not Oshawott, not Samurott, DEWOTT.
Maractus
I don't know why, I just like it.