More Next Gen! Yay!
This is the Adventure Squad. It consists of Dawn, Twilight's youngest daughter, Novissima Una (Novi), Pinkie's youngest daughter, Jasper, Rarity's youngest, and Honey, Applejack's youngest.
The Squad likes to go adventuring together in the woods.

Edit:
Added bios b/c I won't be doing a real ref for these guys anytime soon~

Name: Dawn
Nicknames: none
Parents: Twilight Sparkle and Flash Sentry
Species: Pegasus
Siblings: Dawn (shown here: fav.me/d9hlca3) <-- really need to update that XP
Dawn is a spunky, rambunctious young filly. I don't have set ages for my next gen, but she is around 12. She is a talented, competitive flier, and loves to train with her best friend Talon Feather, Rainbow Dash's son (also shown here: fav.me/d9hlca3). When not training with Talon, she leads her little Adventure Squad. The rest of the squad is quite a bit younger than Dawn, but she is very friendly with little kids and they look up to her a lot. Dawn's interactions with her sister almost always end in fights and yelling at each other, because they are complete opposites and cannot tolerate each other very well. Dawn struggles with being a princess because she feels she's just not cut out for that sort of thing, and always screws up whenever she has to do something "royal". However, most of the time she's a happy-go-lucky filly.

Name: Novissima Una (means 'last one' in Latin)
Nickname: Novi
Parents: Pinkie Pie and Cheese Sandwich
Siblings: she has 5 brothers and 4 sisters which I've never submitted anything of. Someday...
Species: Earth Pony
If you can't already tell from the name, Novi is Pinkie's last child. Pinkie was really worn out after having 9 crazy foals, so little Novi was a relief to her mom. Novi is very serious, quiet, and calm; the complete opposite from the rest of her family. She enjoys spending time with her Aunties Maud and Marble to get a break from the craziness of her family. Besides hanging out with her Aunties, Novi LOVES the trekking around with the Adventure Squad. Even at a young age, Novi is very insightful and wise beyond her years, and often cautions her the squad when Dawn plans something a little too dangerous. Novi is very close to Jasper and they often have playdates to just sit in silence and enjoy each other's company.

Name: Jasper
Nicknames: none
Parents: Spike and Rarity
Siblings: Lavender Jade (shown here: fav.me/d9hlca3)
Species: Dragon Pony
It took 14 years for Spike to convince Rarity to have another foal, but Jasper was worth the wait! Despite not talking that much, Jasper has a very willing spirit and tries to help out wherever he can, whenever he can. He is very protective of his little friend Novi, and enjoys their playdates a lot. Novi was the one to drag him along to the Adventure Squad, and now he loves to go rambling about with them. Jasper has teensy tiny wings budding out of his back that Spike hopes will grow into big dragon wings over time. Jasper can't quite breath fire; all he can make is a few sparks and some smoke. However, he is very strong for his age.

Name: Ambrosia Honeycrisp
Nicknames: Honey, Amber <-- (she really only goes by Honey, but I always call her Amber in my head)
Parents: Applejack and Trenderhoof (don't kill me for this ship)
Siblings: Sweet Apple (shown here: fav.me/d9hlca3), and Jazz Apple (haven't done anything of him yet)
Species: Earth Pony
Trenderhoof came up with Honey's name XD (it sounded very poetic). Honey is the voice of reason in the Adventure Squad. While Novi makes keen observations, she doesn't always speak up, but Honey will always speak her mind and often repeats what Novi says so Dawn can hear. Honey is a farm pony, but might grow up to be an businesswoman, idk (I'm picturing her in a suit and tie and it looks really good). Honey is a generally happy pony, and nothing really gets under her skin. She is FREAKING BLIND without her glasses, so she wears the all the time, even to sleep or to swim. Those glasses have been through a lot. Other than that, she doesn't have much character development... It'll come over time.