A Brony is a way for MLP fans to call themselves "friends"...CONSIDERING I AM ONE TOO. :D
Welcome to the forums, nightmare moon! please don't turn evil on us just like episode 1&2 lol Obviously I can tell you're a fan of MLP, right? I AM TOO. :D DID YOU SEE THE NEW EPISODE? I HAVE YET TO THOUGH. :D Okay, okay, I'll calm down. lol Luckilly, PC has its very own My Little Pony fanclub and you should totally join it...it's really fun.
In terms of Pokemon, we also have stuff to discuss about anything Pokemon...anything you're interested in? I'm sure you'll find lots of stuff to talk about. :D
Have a pleasant stay here at PC, Nightmare Moon! Don't be shy to ask me questions, and read the rules, ok! :)