Cutie Mark: https://www.deviantart.com/starryoak/art/Pink-Sparkle-s-CM-643670959
Original Design by emiemi345 here, redesigned.
Welcome to the Miracleverse! AKA, the Disliked Ships AU, but I don’t use this as a platform for hate. While the universe is slightly… twisted, they are all options that could have happened in the main TFIMverse. They’re a chance to do things with the… standard ships that people have, and using them in new ways, as well as a platform for interesting characters. I want to do some different things with the designs, so I may note the standard designs I tried to avoid with each design. These designs have been done for… an embarrassing amount of time, so expect a lot of the designs at once, I finally decided to upload them. Grumpy Mc-Grumperson here was done in tandem with Misty Mizzle, on August 27th, 2016. Call me lazy. The different thing I tried to do with him is that most Twimac kids are female unicorns, with purple-pink coats or red coats with either Twilight’s mane with orange in it or Macintosh’s mane with stripes in it, usually with a ponytail, or if a male, standard body type and little deviation from the colors/species of the females. Galaxy Gazer here is an earth pony colt who has Big Macintosh’s body type and eye shine, with his colors coming (besides the inspiration of the original adopt) all migrated to Twilight’s side of the family, from Shining Armor and Night Light/Crescent Sparkle, with one pink stripe.
Pink Sparkle Apple GALAXY GAZER is Twilight and Big Macintosh’s 15 year old son (ALMOST 16, he would like you to know) and Maigold Apple’s little half brother. He’s named Galaxy Gazer because he’s absolutely good at staring into the void and contemplating the absolute meaninglessness of existence, and reading Neightzsche in his room-
“Go out and make some friends, dear!”
“Mooommm! Friends are meaningless! I’m reading ‘Celestia is Dead’!”
“Sweetie, you’re misinterpreting Neightzsche again! Remember; Love is blind; friendship closes its eyes!”
“MOOOM STOP RUINING NEIGHTZSCHE FOR ME!”
Ok, maybe his parents made a huge, dumb mistake and decided to name him Pink Sparkle Apple, but that’s definitely not his name and SHUT UP MOM, HE KNOWS NEIGHTZSCHE UNDERSTANDS HIM! (He picked up the book entirely because he misinterpreted the Germaine pony’s entire body of work to be about the meaninglessness of existence and not all the other things it was about, long story short, he just wants to read something that’ll make him seem cool and edgy and a deep thinker). Anyway, Galaxy Gazer is… well, overcompensating for something. Namely, his name, and of course, those bright pink, glowing, sparkling stripes in his mane. They’re a result of his mother’s alicorn genes giving him one trait similar to his alicorn roots; a big honking stripe of pink glowing hair that sparkles the more he feels powerful emotions, including hatred, which means he’s basically a glittery mess.

He does everything he can to be truly respectable as a serious thinker, but he’s just a dark and edgy emo moody teenager who has confidence issues and a big honking bright stripe in his mane just advertising ‘I’m compensating for this’. He doesn’t even like the flowers he’s wearing as a necklace. It’s a gift of ‘friendship’ from Maigold to Galaxy that Twilight thinks is ‘absolutely precious and perfect, sweetie I’m going to enchant it so it doesn’t wilt.’ and he wants to stop wearing it but his mom insists that he should keep mementos of friendship. Twilight is 10000% convinced Pink Sparkle is a mini her and just needs to learn the magic of friendship and is pushing him to make friends really hard, since that’s how she worked it out, but the constant pressure to make friends is just making him even more of a recluse.
He used to be a bright and cute kid, when he got his cutie mark for representing his deep inner turmoil and angst…. yeah, no it’s just a stargazing cutie mark. He was a little momma’s boy before ponies teased him and he went into his “MOM IT’S NOT A PHASE” phase of his life.

His relationship with his big half sister Maigold is complicated, and by complicated, I mean Galaxy/Pinkadink (Maigold’s foalhood nickname that JUST WON’T DIE) hates her guts and she thinks he’s an adorable little dork who’s hiding behind his anger and just needs to grow up a bit and realize he’s being silly which HE TOTALLY ISN’T SHUT UP MAI.
Twilight and Big Macintosh are a very simple couple, subdued and quiet, they’re mostly content to go about their lives separately, but in tandem, exchanging kisses while Twilight reads up in her library tower that she had attached to the barn and Big Macintosh works the fields. They bonded over Big Macintosh’s return of Smarty Pants when Twilight was going through an emotionally trying time, and they bonded further from there. Twilight had a little trouble leaving her library behind, but since Starlight and Sunburst promised to look over it, and it’s only a little whiles away from where Twilight is, she settled in fine enough.