#10: Butterfree
I love doing Nuzlocke runs. And of course, someone crazy enough to do one has to be crazy enough to call a particular pokemon lucky. Well, butterfree is my lucky Nucloke run pokemon. Everytime I have one, I always do well on any Nuzlocke I attempt. This is also why I lost Emerald: there is no Butterfree in Emerald. (Also Norman is a bitch).
#9: Gliscor
I love pokemon with tricky types and tricky movesets. You''ll see some later, but the first of many is Gliscor. I actually love using him to force switches, with the moveset of Dig, Stone Edge, Toxic and U-Turn. He''s very versitile and can be brutal when handled well enough.
#8: Scizor
Speaking of brutal, this one does one thing exceptionally well: Attack. having technician basically makes weak moves strong, and his high attack stat makes strong moves fatal. He also uses priority moves, so hes going first no matter what. He's also cool to look at. There's a reason why he was #1 in Gen 4's OU ranking.
#7: Starmie
Another fast, tricky pokemon. This time it can actually pack a punch himself though, with a wide range of moves he can use. ice beam, Thunderbolt, Hydro Pump, Psychic, you name it. Also has a good set of status moves, so he can either be a powerhouse or a medic. Your choice!
#6: Exeggcutor
Another tricky member. But this time, sacrificing speed for defense. the only bad thing is his wide range of weaknesses, but otherwise, hes pretty scary in his own right. Hes also a 5 headed tree...
#5: Noivern
I love this damn thing. With a great ability in Infiltrate, a great move in Boomburst, and being a BAT DRAGON, hes very easy to love. Another fast attacker, he's more straight forward than others on this list. But he still gets the job done. I was sorely disappointed I couldn't ride one of these in X and Y.
#4: Umbreon
Mixing it up here! Not only is Umbreon slow, he's not even a good attacker. or has an amazing moveset. But hes a total wall, boasting incredible stats and decent defensive moves. Arguably the best as far as Eeveelutions go. And it's so cute. Look at it. LOOK AT HOW CUTE IT IS!
#3: Clefable
Tanky like Umbreon. Good typing like Gliscor. Wide and varied moveset like Starmie. The best of all worlds, IMO. I love Clefable because shes just a cute little puffball, but kicks all kinds of ass. And can be genuinely surprising in many areas. And I like her a lot for another reason too...
#2: Porygon2
Take the tankyness of umbreon, multiply it by 2 or so, and give it Clefable's moveset. You get Porygon2, and it doesn't even need to TRY to be tanky to be a tank. Just give it Eviolite, and it's defenses go to 400+. Add to that a move like Recover, and its sitting pretty for a long time. Add in its large and diverse movepool, and it becomes kind of terrifying. Not bad for a Robot Origami Crane.
#1: Gengar
This is the diverse moveset, terrifying speed, annoying typing/abilities and raw power taken to its extreme. Gengar is a real nightmare to deal with if its on the field, with its only true downside being that it cant take a hit. Gengar is one of the few pokemon to stay in the OU teir every gen, and it keeps getting new toys to play with ever couple of years. Its newest addition was a mega Evolution, which is even MORE terrifying than usual. Overall, a completely amazing pokemon. It's also theorized that gengar is the doppelganger to Clefable up there. So the two have a connection. Isnt that neat?