I absolutley despise all the Kanto Pokemon. I hate them all. There ugly, weak, genric, cliched, annoying, and overrated. The ones I hate in particular, though, are Eevee, Scyther, Charizard, Dewgong, Mewtwo, and Pidgeot. Blegh.
From Johto I hate.......
Ledyba.
Ledian.
Hitmontop.
Blissey.
Igglybuff.
Pichu.
I like the others from this region.
From Hoenn I hate........
The starter final forms.
Hariyama.
Slakoth/Slaking.
Trapinch (NOT it's evos)
Spinda.
Barboach.
Armaldo.
Registeel.
Metagross.
Meh, I hate a couple more from this region, but overall it's decent.