Rainbow Dash x Thunderlane - I personally like RainbowxSoarin better, but I love RainbowxThunderlane foals and I feel like it'd be a fun home environment. So yeah.

Spectrum Flash: Normally called Spec, affectionately called 'Speckles' by Rainbow Dash. Male pegasus, legend in the making (see, told ya I'd use it again). Talent is specifically precision flight at high speeds - feels a huge amount of pressure being the son of the only pony to pull off a sonic rainboom, and likely the only pony who will be able to pull it off after his mother is gone. This pressure has made Spec very strict with himself, designing his own training regimens and running drills every day - he would make a good instructor for the wonderbolts. Relatively calm most of the time, but can crack under pressure. Good friends with Brilliant Beacon and his younger cousin Drizzle. Sexual preference: straight

Whirlwind: Normally called Windy, female pegasus whose talent is flight coordination. She's ditzy and rather effeminate, Windy is pretty reliable when it comes to completing her responsibilities on time - whether she does things right or not is an entirely different matter. She feels super embarrassed by her parents and can be a bit of a brat (okay, maybe a major brat). Kinda friends with Dreamcast and Meridien. Sexuality: straight (design tweak and cutiemark here: https://www.deviantart.com/alicemaple/art/Soo-Embarrassing-519743230 )