Ayyy one of my bois being finished, Rainbow's family designs were hard since all the colours were weird to work with, so I think I got it
*NOTE: This gen was designed before Season 9 and I haven't watched the final so this is completely headcanon

-SOARIN-

Soarin currently still works with Spitfire as a Wonderbolt, He has always been her Second in Command even after all these years. Soarin helps Spitfire with the crew for their shows and helps her set up training with the newbies. After Spitfire gave Rainbow Dash the go ahead to help train the Newbies, Soarin was all over it. Soarin had a small crush on RD ever since she was added to the Wonderbolts, it was fairly obvious to all the Wonderbolts except the dense RD who doesnt really have many attractions or knowledge on relationships. The Wonderbolts decided to help Soarin confess to RD with a simple stunt for her, Originally she wasnt very positive about dating somepony she worked with. Overtime she warmed up to the idea of it but she was hesitate to it, eventually she became more comfortable to her goofy boyfriend.

-RAINBOW DASH-

After teaching the cadets with Twilight and helping out at the school, she was given the go ahead to help train the newbies. While she isnt great and teaching stuff like the history and the class related training, she is great and giving flying tips during the tests. Rainbow Dash gained her wings to have rainbow feathers after performing the best Sonic Rainboom she could create during Twilight coronation. While she doesnt get much time with her hubby or kids due to the wonderbolts training, she does always use her breaks to giving love and affection to Soarin and her 3 children.

-STORM CLOUD-

Storm is the eldest child of RD and Soarin, he is fairly and calm around his friends. He is the most mature of the mane 6 kids due to him being more of a parental figure to his friends, since he is the eldest of the mane 6 kids. He isnt known as the racer kid of the family, while he is known for his physical strength he prefers to not do racing unless being provoked by other ponies. Storm is a self-defense trainer for any creature to learn how to defend themself from harm. He has a limp after being kicked hard by one of his friends by mistake, causing his leg to break. He has a hard time walking around but he makes it work, he wears a brace around his leg during his training.

-ICE AGE-

Ice is the second eldest but youngest son of RD and Soarin, he is often considered the weirdest of the family, he has absolutely zero desire to race or doing really any flying. He is the brains of a family of Brawn and strength. He often wishes he was a unicorn so he wasnt made to feel weird about being a nerdy pegasus. He is a history geek and loves to learn about what happened in Equestria and other locations and knowing the history of powerful artifacts. Ice is also the only Ace pony of the family, he despises romance and doesnt really like or understand what its to like a pony in such a way.

-BUBBLE BLISS-

Bubble is the youngest and only daughter of RD and Soarin, she is very energetic and playful. She enjoys racing other ponies and just having fun. She is basically called RD jr. due to her speed in racing, RD trained her to be fast but respectful. She is very cheerful and enjoys making friends, even trying to make friends with the ponies she beats in races.