Here we go.

First of all, any Pokemon that is spammed in the first five hours. Not including RBY, because at least in those games Pidgey and Rattata were original. Now all their clones (that beaver thing, those stupid birds, Furret or whatever those retarded ferrets were called). Most fish Pokemon, because they're filler. Zubat and Tentacool; their evolutions are fine, but these are basically cave and water spam. Geodude sucks. Hell, it isn't as annoying as Zubat, but killing it is usually easier and quicker than running away, making it useless.

In fact, I hate most rock Pokemon. Most, not all, but pretty much 95% of them suck, because Rock is the worst type in the game.

Bug spam. Why does every new game need a new Caterpie/Weedle family? It doesn't. There are some good bug Pokemon out there, but making you wade through hundreds of useless ones boils my blood.

Also, anything that isn't a fire Pokemon, because there are like 2 fire Pokemon that aren't starters or legendaries. Rapidash and Torkoal. There are not any others, or if there are, they're pointless. Apart from Magmar, but that's it. Houndoom is more useful for being Dark than Fire, so he doesn't count.

The 3 legendary pixies from D/P : impossibly hard to catch and pointless, plus they look like crap.

Anything that has poison as its second-type: thanks for making what was a good Pokemon useless against Psychic pokemon. This includes EVERY GRASS POKEMON IN RBY (apart from Tangela and Exeggcute)(and I don't count Paras because no one likes Paras). Also, who the hell wants to use Tangela? It's crap.

I also hate all Dragon pokemon, mainly because they're hard to catch, unless they're in their utterly useless base forms, and then take about 10 years to level up. Plus, there are only four Dragon pokemon in the game.

Also, Spinda, because they look like crap and annoyed the hell out of me in RSE.