The Galaktika siblings Stormfront and Andromeda Galatika are pegasus-batpony hybrids. They left a poorer overseas region, escaping to Aero for a better life.
Moving to Aeroville
Andromeda moved to Aero first, to get her teaching degree in Strato City.
The siblings kept in touch, and Stormfront travelled to Aero later, the siblings reuniting in Aeroville.