Pound Cake
Straight He/Him
He's famous for his strange decorative cakes, he's usually commissioned to make weird art out of his cakes so he's always happy to make something normal. You can always trust him to make something yummy and be a shoulder to lean on.

Pumpkin Cake
Pansexual She/Her
A "Cakeologist", somepony who studies old ancient recipes and baking techniques. She tries to reproduce these recipes and share them with others. Also a writer, has many cookbooks that she makes with her brother.

Other Headcanons/Facts:
• The twins are "super tasters"; when you have incredibly sensitive taste buds. They cant eat salty or bitter things that often, but can reverse engineer any type of dessert they eat.
• Pumpkin has had many partners, but fails in relationships every time.
• Pound Cake x "Flurry Heart":https://www.deviantart.com/aztrial/art/WishfulGen-Flurry-Heart-Headcanon-864935630 :3 While Pound Cake likes her and she makes him feel safe, Flurry Heart doesn't have the guts to do anything about it and always puts herself in the friendzone.
• Pumpkin's favorite dessert is custard while Pound's are any deep-fried desserts, like Tulumba or Churros