All my fursonas are Alien-based Kelpies who grew up as science experiments and have been thrown off their home planet due to being failures. Since they are science experiments, they can change form but still manage to keep their ears and markings found on their bodies, so they are always recognizable whether or not they change their appearance. The colours of the markings represent which family clan they come from on their home planet. Since then they have been living on the planet Earth with humanoid forms and living within the world while trying to hide their true forms away from humans.