So like her name implies, Rainy day was born on a….well rainy day, she loves cats and the only thing she loves more than cats is her twin brother monochrome, they’re best friends for life. And no she won’t grow up to be a old cat lady…. although she does think that idea sound a bit cool.  
Parents:Rainbow dash and Fluttershy  
Personality:sad or doesn’t care (literally her only two emotions)  
Likes:her bother and cats (in that order)  
Dislikes:when she’s not with her brother, (sometimes) Shimmering rave
 
And the prince of friendship and parties himself, Shimmering rave. He was named after a certain ketchup and mustard former-she demon, Twilight was very proud of sunset’s accomplishments that she named her son after her, pinkie wasn’t jealous at all(well maybe a little) but loves the name anyways. unlike his older sister, Magical party, he adores being a prince and even uses it to pick up some mares (when he’s older) of course his heart belongs to Rainy day, but no one needed to know THAT.  
Parents: Twilight Sparkle and Pinkie Pie  
Personality: Dashing and Romantic  
Likes: Rainy day (a lot), being a prince and going to raves and parties with his sister  
Dislikes: being rejected (by Rainy day), being alone and seeing others sad
 
any mistakes? sorry I was rushing