There is no such thing as the "worst" Pokemon. Not everyone plays competitively and ANY Pokemon is good ingame. Why do you think there are Pidgey Only runs and runs of the sort? You may not like a Pokemon, personally, but that doesn't mean others don't.
This topic is bad and you should feel bad.
NNID - Aerontar. Steam - KingAerontar Currently Awaiting...SSBU, SSB3DS, Pokemon X, Pokemon Y and Watch Dogs.
I'm not going to keep repeating myself. Go use it and find out.
I recently replaced my Vaporeon with one, and I have to say, it's fantastic. A better wall even than Forretress and Blissey because it's stats are balanced across all 3 defensive stats. It also has Moonlight for decent recovery aside from wish.
Also, probably has one of the coolest designs for a pokemon ever. I used to like it more than Umbreon, but considering that I usually prefer sweepers, I've come to like Espeon more.
Not changing this sig until we get a new main series Tales game released on a Nintendo console in the US