the filly's and colts have been decided, now i have thought about this long and hard and took into account a number of restrictions, mostly to not make them like anyone in the show and to make them all different, also I've tried to have as many OC characters as possible so that way we can see the characters develop much more.
our first colt, suggested by someone in the comments, will be big macs son, red fur just like his daddy and is a proud stallion just like his dad too but was born mute, so he has a chatot called cha cha to help him speak, and he wants to be a pokemon trainer because he wants to be the best no matter his limitations, and to also find his mum who he has not seen ever since he was born.
oh and here's a hint: his mum is not a pony.
okay for the filly, i decided to base it round my sister, not in terms of personality, but in terms of my personal experience, see when i was little we both loved pokemon, she doesn't any more, and i was the one who was better at pokemon in every way except for one part and that's rare pokemon, my sister would always find rare pokemon, she would catch the really hard to catch pokemon just by pure luck, and that's were the idea for this character came from.
she will be a pink filly Pegasus who is super curious and is buddy's with pinkie pie, and she loves to make her pokemon happy and play games with them, but she wants to be the best with her pokemon because she wants to show everyone her love for her pokemon, also she loves to make poke muffins, basically poffins but equestia style, and if i had to compare her to anyone from the show, think of may from the pokemon series but not annoying and you don't want to punch her in the face and she doesn't cry every nine seconds.
the last colt will be fluttershys personal little student and is the smart one of the three, and is fascinated with all pokemon and is the one who does all the research he can on every pokemon, having books apon books of pokemon, the reason he wants to become the best is mostly so he has a excuse to research all the pokemon in the whole world, as for anything special about him, his mum is one of the gym leaders and he is emmberessed because she always emmberesses him a lot, and he has a tendency to jump to conclusions, because he knows more about pokemon then he does about pony's.
now out of these three i liked the mac's son idea, mostly because it could lead to something interesting in my opinion but leave some comments for there names and give me some idea's on how you want the story to go, do you want it to focus on one of the kids and have the other two appear now and then, or do you want the chapters to take turns with each character?
also, if you guessing who mac's son's mum is, then i might, might just might give a hint, of if you say please a lot i may include how mac met the lucky lady.