Scizor

Scizor is an interesting Pokemon. Its type, Bug / Steel, is a cool defensive type with only one weakness (4x to Fire). It has a base Attack of 130. It can learn Agility to make up for its low Speed. Finally, it can survive most Explosions with about 10% or 20% to spare. So, the question remains: why the hell isn't it used more often?

Simple: its offensive movepool sucks. The only useful attacks it gets are Silver Wind, Steel Wing, and Hidden Power. While it does get STAB off Silver Wind and Steel Wing, their low Base Powers mean they won't do any major damage to teams. Physical walls and tanks completely shut it down, any Fire-type attack will always OHKO it, and even Blissey can hurt it with Thunder Wave if it lacks Hidden Power Fighting.

However, for what it has to work with, Scizor isn't too bad. On occasion, Silver Wind can give stat boosts and provide it with some additional staying power. Agility grants it the potential to sweep. It can OHKO Psychic-types that lack a Fire move, such as Alakazam without Fire Punch; it can survive any attack from Aerodactyl and OHKO back with Steel Wing; finally, it can OHKO Jolteon with Hidden Power Ground. Scizor is not a bad Pokemon, but requires some setup and, occasionally, a little luck.