Thranta

Thranta were a large, flying species native to the planet Alderaan. The species was not entirely wiped out during when their homeworld was destroyed by the Galactic Empire, as a population had been transplanted to the gas giant Bespin. On Bespin the thranta lived in a breathable region of the planet's atmosphere where they were ridden through the clouds by only the most daring thrill seekers.

Behind the scenes
Thranta first appeared in concept art drawn by artist Ralph McQuarrie for Star Wars: Episode V The Empire Strikes Back, which was later reused in The Illustrated Star Wars Universe in 1995 introducing them to the Star Wars Legends continuity. The species was confirmed to be canon by the reference book Ultimate Star Wars, which was released in 2015.