Emerald is a female android built to be a star and a performer. After Itamai, the nightclub that was her home for many years, was forcefully taken-over by an evil businessman, she joined the Irator Exploration Society to escape.
Rin is a female android originally built to be a pilot for VoidTech Industries. She escaped from VoidTech and began exploring the Void Prime Sector, finally joining up with the Irator Exploration Society two years later.
You can also find the player that plays Rin, Erin, in Trans Sister Radio
Umber is a female valdyssan who used to drift from ship to ship. After finding a void relic and exploring her magical talents, she joined up with the Irator Exploration Society.
She's super friendly! :D