Hmm... That's tough. I hate Pikachu, Lapras, and Quagsire equally.
Well... Pikachu is overrated, has a stupid design, and sucks. Lapras is overrated, has a stupid design, and sucks. Quagsire just has an awful design, and walling in Gen V's Wi-Fi is cheap. If I had a team of six it would be easier to take down a Water Absorb (or whatever) Quagsire.
I'm not easily impressed; I'm usually oblivious to whatever's in front of me. Stunfisk is the epitome of monstrous majestic legendary creatures that spew fire.