The Regalti are a sentient, upright, bipedal species of relatively average size, native to the planet Collena, and Collena's Moon, Sephar. They have since spread out from their home worlds to the stars, and now a majority of their species lives in space.
The Regalti are unique for being a sentient species able to see into the Ultraviolet Spectrum of light (UV), and for being able to involuntarily change their skin color, based on body temperature and emotional state. Their cultures and languages developed first around their association and perceptions of color. They have feathers or a feather-like structure that superficially resembles flight feathers, though did not evolve from birds.
As an advanced civilization, Regalti have discovered fusion technology, have life-extension in the form of uploading their minds to computer systems and robots, and have discovered how to make high-temperature superconductors. Most of their technology is based around mass drivers and magnetism, and most sources of their energy are nuclear in nature, though they do use fossil fuels and wind power under some circumstances.
The Regalti live almost entirely in space. These stellar Regalti make up 99% of the total population.