To give my answer, it's Eevee. I just hate that so many people sing its praises when its evolutions that are sung the most praise...suck. I'm sorry, but it's true. :V
If, by suck, you mean a gross misuse of the word, then yes.
Have you ever actually used or battled a Vaporeon before? They're extremely proficient at passing Wish and stalling with Toxic-Protect. Umbreon can do the same job, but with reapportioned base stats and type. And Jolteon is the 3rd fastest pokemon in OU, 4th overall, counting Deoxys only once. So, really, what's your logic here?
......and you bashed Typhlosion. No taste at all. Wanna throw Deoxys and Charizard in there while your at it?
*sigh*
Anyway, concerning concept/looks, Jynx is by far the worst idea for a pokemon ever. Creeps me out every time I see it, and its cry wastes a whole 3 seconds of my life. Even it's typing doesn't make sense: How in the world does it look like an Ice type? Psychic, yes, but Ice?
And a pokemon that's irratating to battle: Breloom. Ughh....the repetitive Spore-Leech Seed-Sub nonsense drives me
craaaazzzzzy. Shuckle is similar, it spams status, except that's
all it can do, so one sub makes it useless. Breloom has that base 130 attack stat that keeps bombarding your subs.
Oh, and I hate Bidoof, too. Doesn't everybody?