Quill's brother, Pi, is a young adult pegasus who lives and works in Cloudsdale. He enjoys math as a hobby, but his talent and occupation are in baking. He owns a bakery called Pi in the Sky, where he mostly sells fancy bread. He also makes incredible pies, and according to many his best ones are his chocolate chess pie. He has an apartment a few blocks away from the shop, where Quill with him for a couple of years before she moved out of the cloud city. His attitude is generally very laid-back, though he can become very excited about a new recipe or advancements in the world of mathematics.
He's very affectionate towards his little sister, and they've never really had very many "sibling squabbles". Ever since they kicked Quill out, he's been rather cold towards his parents, though he still comes home for major holidays. He and Quill frequently exchange letters, though Pi has yet to visit her in her Ponyville home.
His cutie mark is a pie with the pi symbol on it.
The rest is up to you! Here's a rough picture of him:
...Not my greatest work, but you get the idea. I'll make an actual icon if someone decides to pick him up.
The Fun Has Been Doubled! is a My Little Pony: Friendship is Magic moderate-to-advanced forum roleplay. Set after the events of the fifth season, we currently have no overarching plot. Instead, we simply have created the world of Equestria for you as a giant playground to have fun in and to explore the magic of friendship. Canon characters and original characters are available for you to play as, both ponies and non-pony species alike! Just remember that we are account-per-character and we'll be fine!
So why don't you stay for a while, look around, and let us know if we should get a welcome party started for you.