Scootaloo and Flash's Son, Ruffin Tumble
Despite Apple Bloom' best efforts, she was never quite able to help an adult Scootaloo out of the many holes she dug herself into in the midst of her depression. Scootaloo had been adopted into the Apple Family at a young age and despite caring for Apple Bloom it was no more than she cared for Sweetie Belle. She had several lovers here and there, never faithful to any, never opening up to anyone.
Her parents had let her down by never revealing themselves to her, her hero left her and by then the damage had been done and some parts of that would she would never move past. She was however able to find some solace in Flash. Flash had crushed on her long ago during Scootaloo's crusader days but coming from such an exclusive group, Flash was never quite able to get in enough to talk to her or the other two fillies. The two eventually grew up though to hang out, Flash on her rollerblades and Scootaloo on her scooter, never quite growing out of her love for it.
Scootaloo teaches at a small dance school for Pegasi and Flash's job I'm not sure of.
Their son Ruffin Tumble is without cutie mark and the only Crusader-born without one.
Apple Seed was born
Shiner got hers early on.
Shiner and Tumble used to be the best of friends to where their mothers would pick on just how "close" they were. However when Shiner finally did get her cutie mark and he was left without one, bullied by their classmates he grew to resent her and eventually lashed out. From then on both of them changed.
Tumblr is always getting into fights and often while fine one on one, his attitude had gotten him ganged up on many times in the past. He's condescending toward other kids. He doesn't have much interest in any school activities and unlike most pegasi children doesn't care about the Wonderbolts. He doesn't even care about flying or competition. He prefers his hooves to his wings-- wings have rarely ever served him in a fight.
Later in life he DOES develop feelings for Shiner but by then it seems too late.Spike and Sweetie Belle's Daughter, Starshine
Not sure how the parents got together yet. I'd rather more detail than last time.
Spike normally just works several small jobs: Twilight's assistant at the library as well as Rarity's gem-seeker. He'll also help out around Ponyville when more than pony strength is needed. He grows to be only twice the size of the average stallion.
Sweetie Belle is a singer and often out of town.
Shiner has an older brother who isn't really close with the family anymore for reasons she herself doesn't understand.
With him gone and her parents always busy and Ponyville always giving her second-glances she felt completely alone aside from her mother's friends and their children.
Her best friend was Tumble before he got so jealous of her cutie mark. Her cutie mark which was earned trying to help another pony get theirs by helping them see their own self-worth.
When he left, she too became bitter and aggressive but not quite as anti-social. She wanted people always around but never let them get too close.
She's slightly protective of Apple Seed.Apple Bloom's Son, Apple Seed
(Leave me alone about the name. I COULD have done better but given his story I felt this just worked much better than anything else.)
Apple Bloom never found her special somepony. Or rather she had known them forever but she just wasn't their special somepony in return.
Apple Bloom did want a child though. She didn't want to deal with doners though, didn't some some father around to complicate things.
So she had the Magic Mirror do what it hasn't done in years: cloned rather than produced an all new foal.
Given that this foal had no other pony to balance out Apple Bloom's genes, the foal came out essentially looking like a male Apple Bloom with half the colors washed out. He was even born with the same cutie mark as her: a zap apple leaving a spiraling rainbow stream, it's colored paled in comparison to the one that graced his mother's flank.
While most young foals would've loved to get their cutie mark so easily, Seed was never happy about it. He may've made decent things with zapple apples, may've been a decent artist but even then he was only half as good as his mother. On top of that, he had no interest in either of these things.
His cutie mark makes him feel cheated of his chance to truly be someone, his own pony.