Sweetie and Spike soon became a couple after Applejack and Rarity's wedding. Spike was heartbroken that his long-time crush had finally settled down, with Applejack no less. Sweetie Belle recognized this and helped him move on from Rarity. From this they grew to like each other, and eventually love. The couple got pregnant a bit earlier than they meant, but Sweetie Belle was estatic anyways, and Spike didn't mind too terribly even if he was nervous.

Allegro is a dracony (or a kirin, whichever term you like), so she's half-dragon and half-pony. She's unable to fly or use any type of magic other than being able to breath light green fire. She's the sweetest thing out there and a tiny bit spoiled, but very kind and gentle. She is also very charitable and humble, giving to those in need and sharing unlike other little fillies would. Like her mother, she's very skilled at singing and will sing whenever given the offer. As she grows older, she will become an entertainer for the newly expanded Sugarcube Corner.