I had this done for quite a while but I hadn't decided between the two designs I had for the last kid. I might still change it in future BUT THIS IS GOOD FOR NOW
Rainbow Dash and Dumbbell have three kiddos
Raincloud Song: (previously named Raincould Storm): A very calm and confident mare in general, pursues a career in music and singing. She used to be a Wonderbolt trainee but left the academy due to some… Major issues. Although Rainy might look all serene, she is a HUGE flirt. She's a heartbreaker and flirts with pretty much everyone really, but mares are more to her tastes. She's been with so many ponies she might not even remember. Though she doesn't really date people seriously, most of her relationships are just flings to her, she doesn't like having any strings attached to anypony and whenever her partner gets their hopes up she usually "breaks up" with them shortly after. Wonder why.
Skychaser: (could be a placeholder name? Just overall fits his backstory very well but honestly, I was calling him seaboy) has been more enthusiastic and energetic in the past. He is very chill and friendly, but you can tell Sky has been through a lot in the past. He was a very energetic, outstanding and passionate flyer in the past and dreamed to become a wonderbolt, and honor his mother's legacy, but due to an unfortunate accident that led his wing to be amputated, Sky lost his wing, along with his aspirations, dreams and what seemed to be his entire life. He went through a long period of depression and could not leave the house of barely his room for a long time. But thanks to the help of some people he meets along his life, he will find a new passion in something else.
Ember Flare: Rainbow could definetely not blame her older children for not making to the wonderbolts, but she was still expecting a chance to get at least a more daredevil child at her last shot. Someone brave, fierce and fiery. Eventually, Ember Flare was born. Rainbow was expecting the name she gave her last kiddo to reflect her fiery and personality. Well. Ember turned out to be a sweet, kind, well-manered and empathetic little girl, who very much enjoyed helping old ladies carry their groceries, feeding stray cats or helping a blind pony cross the street. She is a little-miss-perfect and a quick learner, and nails pretty much everything she attempts doing. Using that in her favour, Rainbow was kinda wrong for doing that, but pushed Ember a bit into joining the Wonderbolt Academy. Unfortunately, Ember has a bad habit of putting others first and ignoring her own feelings and desires, and submissively followed her mother's wishes, even if it meant making herself miserable. Rainbow is not aware of Ember's true feelings.
(btw, almost forgot, a huge thanks for my friendo duppydoodles for helping me with seaboy's design!)