@Background Pony #AFD5
Pinkie, or rather, Pinkling, is a changeling. Rainbot is a robot, Scorpilight is a scorpony(scorpion-pony), Arachnity is a spider-pony, Timberjack is a Timberwolf-pony, and Flutterbat.
@Background Pony #AFD5
Another idea is where Nyx is visiting the Crystal Empire and finds a civilization of giant sentient insects and snakes that quickly take a liking to Nyx