Tiers

Welcome everyone! Today for all of the beginners, I'm going to explain what tiers are for today.
Tiers: Tiers are basically what level gameplay pokemon are in. For example, NU ( never-used ) are pokemon that aren't that popular. They don't have the highest attack stats and sometimes not that good of a movepool. They can still attack pretty tough though and can sometimes fit in th UU section.
UU ( under-used ): These critters are more of the standard term and a lot of them can hit pretty hard. Some UU's are Houndoom, Steelix, and Feraligatr.
BL ( border-line ): These pokemon are super powerful UU's, but just can't break the borderline.
OU ( over-used ): These guys pack a whallop with their attacks and usually have great defenses. Some examples are Swampert, Skarmory, and Heracross.
UBER: These pokemon are mostly legendaries and have monstrous attack or defense. Some examples are Groudon, Ho-oh, and Foretress.